diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 8b43e3288..e25de8c46 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.391.0"
+  ".": "0.392.0"
 }
\ No newline at end of file
diff --git a/.stats.yml b/.stats.yml
index a54aa529c..ade5a4601 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,4 +1,4 @@
 configured_endpoints: 227
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/increase%2Fincrease-e32ea60c7028faaf552e2846c9a58f838b16922041d551664dcb1bfa343f38cf.yml
-openapi_spec_hash: 8d3acf560b411999fee65eedda9e6a73
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/increase%2Fincrease-9e8b4907003e0149ea10d8c95b2facfbc011f366cea40fe86b5f02940e68998d.yml
+openapi_spec_hash: e93ee5c48421038334b8961b303465d6
 config_hash: ca52ca9a2968f330339fd50c1a386e05
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5165ef5e3..9c5ace69d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 0.392.0 (2026-01-07)
+
+Full Changelog: [v0.391.0...v0.392.0](https://github.com/Increase/increase-java/compare/v0.391.0...v0.392.0)
+
+### Features
+
+* **api:** api update ([1a412bd](https://github.com/Increase/increase-java/commit/1a412bd889d80f91b5877accf9f363720ffeda01))
+
 ## 0.391.0 (2026-01-06)
 
 Full Changelog: [v0.390.0...v0.391.0](https://github.com/Increase/increase-java/compare/v0.390.0...v0.391.0)
diff --git a/README.md b/README.md
index 54f7b3c11..aead2074f 100644
--- a/README.md
+++ b/README.md
@@ -2,8 +2,8 @@
 
 <!-- x-release-please-start-version -->
 
-[![Maven Central](https://img.shields.io/maven-central/v/com.increase.api/increase-java)](https://central.sonatype.com/artifact/com.increase.api/increase-java/0.391.0)
-[![javadoc](https://javadoc.io/badge2/com.increase.api/increase-java/0.391.0/javadoc.svg)](https://javadoc.io/doc/com.increase.api/increase-java/0.391.0)
+[![Maven Central](https://img.shields.io/maven-central/v/com.increase.api/increase-java)](https://central.sonatype.com/artifact/com.increase.api/increase-java/0.392.0)
+[![javadoc](https://javadoc.io/badge2/com.increase.api/increase-java/0.392.0/javadoc.svg)](https://javadoc.io/doc/com.increase.api/increase-java/0.392.0)
 
 <!-- x-release-please-end -->
 
@@ -13,7 +13,7 @@ The Increase Java SDK is similar to the Increase Kotlin SDK but with minor diffe
 
 <!-- x-release-please-start-version -->
 
-The REST API documentation can be found on [increase.com](https://increase.com/documentation). Javadocs are available on [javadoc.io](https://javadoc.io/doc/com.increase.api/increase-java/0.391.0).
+The REST API documentation can be found on [increase.com](https://increase.com/documentation). Javadocs are available on [javadoc.io](https://javadoc.io/doc/com.increase.api/increase-java/0.392.0).
 
 <!-- x-release-please-end -->
 
@@ -24,7 +24,7 @@ The REST API documentation can be found on [increase.com](https://increase.com/d
 ### Gradle
 
 ```kotlin
-implementation("com.increase.api:increase-java:0.391.0")
+implementation("com.increase.api:increase-java:0.392.0")
 ```
 
 ### Maven
@@ -33,7 +33,7 @@ implementation("com.increase.api:increase-java:0.391.0")
 <dependency>
   <groupId>com.increase.api</groupId>
   <artifactId>increase-java</artifactId>
-  <version>0.391.0</version>
+  <version>0.392.0</version>
 </dependency>
 ```
 
diff --git a/build.gradle.kts b/build.gradle.kts
index b6dd4495a..ea5627198 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -8,7 +8,7 @@ repositories {
 
 allprojects {
     group = "com.increase.api"
-    version = "0.391.0" // x-release-please-version
+    version = "0.392.0" // x-release-please-version
 }
 
 subprojects {
diff --git a/increase-java-core/src/main/kotlin/com/increase/api/models/carddisputes/CardDispute.kt b/increase-java-core/src/main/kotlin/com/increase/api/models/carddisputes/CardDispute.kt
index 9295195a4..b08e60e3a 100644
--- a/increase-java-core/src/main/kotlin/com/increase/api/models/carddisputes/CardDispute.kt
+++ b/increase-java-core/src/main/kotlin/com/increase/api/models/carddisputes/CardDispute.kt
@@ -35652,6 +35652,7 @@ private constructor(
                 @JsonCreator(mode = JsonCreator.Mode.DISABLED)
                 private constructor(
                     private val cardholderCancellation: JsonField<CardholderCancellation>,
+                    private val explanation: JsonField<String>,
                     private val merchantResolutionAttempted: JsonField<MerchantResolutionAttempted>,
                     private val receivedAt: JsonField<LocalDate>,
                     private val additionalProperties: MutableMap<String, JsonValue>,
@@ -35663,6 +35664,9 @@ private constructor(
                         @ExcludeMissing
                         cardholderCancellation: JsonField<CardholderCancellation> =
                             JsonMissing.of(),
+                        @JsonProperty("explanation")
+                        @ExcludeMissing
+                        explanation: JsonField<String> = JsonMissing.of(),
                         @JsonProperty("merchant_resolution_attempted")
                         @ExcludeMissing
                         merchantResolutionAttempted: JsonField<MerchantResolutionAttempted> =
@@ -35672,6 +35676,7 @@ private constructor(
                         receivedAt: JsonField<LocalDate> = JsonMissing.of(),
                     ) : this(
                         cardholderCancellation,
+                        explanation,
                         merchantResolutionAttempted,
                         receivedAt,
                         mutableMapOf(),
@@ -35687,6 +35692,15 @@ private constructor(
                     fun cardholderCancellation(): CardholderCancellation =
                         cardholderCancellation.getRequired("cardholder_cancellation")
 
+                    /**
+                     * Explanation of what was ordered and was not as described.
+                     *
+                     * @throws IncreaseInvalidDataException if the JSON field has an unexpected type
+                     *   or is unexpectedly missing or null (e.g. if the server responded with an
+                     *   unexpected value).
+                     */
+                    fun explanation(): String = explanation.getRequired("explanation")
+
                     /**
                      * Merchant resolution attempted.
                      *
@@ -35717,6 +35731,16 @@ private constructor(
                     fun _cardholderCancellation(): JsonField<CardholderCancellation> =
                         cardholderCancellation
 
+                    /**
+                     * Returns the raw JSON value of [explanation].
+                     *
+                     * Unlike [explanation], this method doesn't throw if the JSON field has an
+                     * unexpected type.
+                     */
+                    @JsonProperty("explanation")
+                    @ExcludeMissing
+                    fun _explanation(): JsonField<String> = explanation
+
                     /**
                      * Returns the raw JSON value of [merchantResolutionAttempted].
                      *
@@ -35759,6 +35783,7 @@ private constructor(
                          * The following fields are required:
                          * ```java
                          * .cardholderCancellation()
+                         * .explanation()
                          * .merchantResolutionAttempted()
                          * .receivedAt()
                          * ```
@@ -35771,6 +35796,7 @@ private constructor(
 
                         private var cardholderCancellation: JsonField<CardholderCancellation>? =
                             null
+                        private var explanation: JsonField<String>? = null
                         private var merchantResolutionAttempted:
                             JsonField<MerchantResolutionAttempted>? =
                             null
@@ -35784,6 +35810,7 @@ private constructor(
                         ) = apply {
                             cardholderCancellation =
                                 consumerServicesNotAsDescribed.cardholderCancellation
+                            explanation = consumerServicesNotAsDescribed.explanation
                             merchantResolutionAttempted =
                                 consumerServicesNotAsDescribed.merchantResolutionAttempted
                             receivedAt = consumerServicesNotAsDescribed.receivedAt
@@ -35807,6 +35834,21 @@ private constructor(
                             cardholderCancellation: JsonField<CardholderCancellation>
                         ) = apply { this.cardholderCancellation = cardholderCancellation }
 
+                        /** Explanation of what was ordered and was not as described. */
+                        fun explanation(explanation: String) =
+                            explanation(JsonField.of(explanation))
+
+                        /**
+                         * Sets [Builder.explanation] to an arbitrary JSON value.
+                         *
+                         * You should usually call [Builder.explanation] with a well-typed [String]
+                         * value instead. This method is primarily for setting the field to an
+                         * undocumented or not yet supported value.
+                         */
+                        fun explanation(explanation: JsonField<String>) = apply {
+                            this.explanation = explanation
+                        }
+
                         /** Merchant resolution attempted. */
                         fun merchantResolutionAttempted(
                             merchantResolutionAttempted: MerchantResolutionAttempted
@@ -35868,6 +35910,7 @@ private constructor(
                          * The following fields are required:
                          * ```java
                          * .cardholderCancellation()
+                         * .explanation()
                          * .merchantResolutionAttempted()
                          * .receivedAt()
                          * ```
@@ -35877,6 +35920,7 @@ private constructor(
                         fun build(): ConsumerServicesNotAsDescribed =
                             ConsumerServicesNotAsDescribed(
                                 checkRequired("cardholderCancellation", cardholderCancellation),
+                                checkRequired("explanation", explanation),
                                 checkRequired(
                                     "merchantResolutionAttempted",
                                     merchantResolutionAttempted,
@@ -35894,6 +35938,7 @@ private constructor(
                         }
 
                         cardholderCancellation().validate()
+                        explanation()
                         merchantResolutionAttempted().validate()
                         receivedAt()
                         validated = true
@@ -35916,6 +35961,7 @@ private constructor(
                     @JvmSynthetic
                     internal fun validity(): Int =
                         (cardholderCancellation.asKnown().getOrNull()?.validity() ?: 0) +
+                            (if (explanation.asKnown().isPresent) 1 else 0) +
                             (merchantResolutionAttempted.asKnown().getOrNull()?.validity() ?: 0) +
                             (if (receivedAt.asKnown().isPresent) 1 else 0)
 
@@ -36499,6 +36545,7 @@ private constructor(
 
                         return other is ConsumerServicesNotAsDescribed &&
                             cardholderCancellation == other.cardholderCancellation &&
+                            explanation == other.explanation &&
                             merchantResolutionAttempted == other.merchantResolutionAttempted &&
                             receivedAt == other.receivedAt &&
                             additionalProperties == other.additionalProperties
@@ -36507,6 +36554,7 @@ private constructor(
                     private val hashCode: Int by lazy {
                         Objects.hash(
                             cardholderCancellation,
+                            explanation,
                             merchantResolutionAttempted,
                             receivedAt,
                             additionalProperties,
@@ -36516,7 +36564,7 @@ private constructor(
                     override fun hashCode(): Int = hashCode
 
                     override fun toString() =
-                        "ConsumerServicesNotAsDescribed{cardholderCancellation=$cardholderCancellation, merchantResolutionAttempted=$merchantResolutionAttempted, receivedAt=$receivedAt, additionalProperties=$additionalProperties}"
+                        "ConsumerServicesNotAsDescribed{cardholderCancellation=$cardholderCancellation, explanation=$explanation, merchantResolutionAttempted=$merchantResolutionAttempted, receivedAt=$receivedAt, additionalProperties=$additionalProperties}"
                 }
 
                 /**
diff --git a/increase-java-core/src/main/kotlin/com/increase/api/models/carddisputes/CardDisputeCreateParams.kt b/increase-java-core/src/main/kotlin/com/increase/api/models/carddisputes/CardDisputeCreateParams.kt
index ce4e4d911..d62da14b3 100644
--- a/increase-java-core/src/main/kotlin/com/increase/api/models/carddisputes/CardDisputeCreateParams.kt
+++ b/increase-java-core/src/main/kotlin/com/increase/api/models/carddisputes/CardDisputeCreateParams.kt
@@ -22584,6 +22584,7 @@ private constructor(
         @JsonCreator(mode = JsonCreator.Mode.DISABLED)
         private constructor(
             private val cardholderCancellation: JsonField<CardholderCancellation>,
+            private val explanation: JsonField<String>,
             private val merchantResolutionAttempted: JsonField<MerchantResolutionAttempted>,
             private val receivedAt: JsonField<LocalDate>,
             private val additionalProperties: MutableMap<String, JsonValue>,
@@ -22594,6 +22595,9 @@ private constructor(
                 @JsonProperty("cardholder_cancellation")
                 @ExcludeMissing
                 cardholderCancellation: JsonField<CardholderCancellation> = JsonMissing.of(),
+                @JsonProperty("explanation")
+                @ExcludeMissing
+                explanation: JsonField<String> = JsonMissing.of(),
                 @JsonProperty("merchant_resolution_attempted")
                 @ExcludeMissing
                 merchantResolutionAttempted: JsonField<MerchantResolutionAttempted> =
@@ -22603,6 +22607,7 @@ private constructor(
                 receivedAt: JsonField<LocalDate> = JsonMissing.of(),
             ) : this(
                 cardholderCancellation,
+                explanation,
                 merchantResolutionAttempted,
                 receivedAt,
                 mutableMapOf(),
@@ -22618,6 +22623,15 @@ private constructor(
             fun cardholderCancellation(): CardholderCancellation =
                 cardholderCancellation.getRequired("cardholder_cancellation")
 
+            /**
+             * Explanation of what was ordered and was not as described.
+             *
+             * @throws IncreaseInvalidDataException if the JSON field has an unexpected type or is
+             *   unexpectedly missing or null (e.g. if the server responded with an unexpected
+             *   value).
+             */
+            fun explanation(): String = explanation.getRequired("explanation")
+
             /**
              * Merchant resolution attempted.
              *
@@ -22648,6 +22662,16 @@ private constructor(
             fun _cardholderCancellation(): JsonField<CardholderCancellation> =
                 cardholderCancellation
 
+            /**
+             * Returns the raw JSON value of [explanation].
+             *
+             * Unlike [explanation], this method doesn't throw if the JSON field has an unexpected
+             * type.
+             */
+            @JsonProperty("explanation")
+            @ExcludeMissing
+            fun _explanation(): JsonField<String> = explanation
+
             /**
              * Returns the raw JSON value of [merchantResolutionAttempted].
              *
@@ -22690,6 +22714,7 @@ private constructor(
                  * The following fields are required:
                  * ```java
                  * .cardholderCancellation()
+                 * .explanation()
                  * .merchantResolutionAttempted()
                  * .receivedAt()
                  * ```
@@ -22701,6 +22726,7 @@ private constructor(
             class Builder internal constructor() {
 
                 private var cardholderCancellation: JsonField<CardholderCancellation>? = null
+                private var explanation: JsonField<String>? = null
                 private var merchantResolutionAttempted: JsonField<MerchantResolutionAttempted>? =
                     null
                 private var receivedAt: JsonField<LocalDate>? = null
@@ -22711,6 +22737,7 @@ private constructor(
                     apply {
                         cardholderCancellation =
                             consumerServicesNotAsDescribed.cardholderCancellation
+                        explanation = consumerServicesNotAsDescribed.explanation
                         merchantResolutionAttempted =
                             consumerServicesNotAsDescribed.merchantResolutionAttempted
                         receivedAt = consumerServicesNotAsDescribed.receivedAt
@@ -22733,6 +22760,20 @@ private constructor(
                     cardholderCancellation: JsonField<CardholderCancellation>
                 ) = apply { this.cardholderCancellation = cardholderCancellation }
 
+                /** Explanation of what was ordered and was not as described. */
+                fun explanation(explanation: String) = explanation(JsonField.of(explanation))
+
+                /**
+                 * Sets [Builder.explanation] to an arbitrary JSON value.
+                 *
+                 * You should usually call [Builder.explanation] with a well-typed [String] value
+                 * instead. This method is primarily for setting the field to an undocumented or not
+                 * yet supported value.
+                 */
+                fun explanation(explanation: JsonField<String>) = apply {
+                    this.explanation = explanation
+                }
+
                 /** Merchant resolution attempted. */
                 fun merchantResolutionAttempted(
                     merchantResolutionAttempted: MerchantResolutionAttempted
@@ -22793,6 +22834,7 @@ private constructor(
                  * The following fields are required:
                  * ```java
                  * .cardholderCancellation()
+                 * .explanation()
                  * .merchantResolutionAttempted()
                  * .receivedAt()
                  * ```
@@ -22802,6 +22844,7 @@ private constructor(
                 fun build(): ConsumerServicesNotAsDescribed =
                     ConsumerServicesNotAsDescribed(
                         checkRequired("cardholderCancellation", cardholderCancellation),
+                        checkRequired("explanation", explanation),
                         checkRequired("merchantResolutionAttempted", merchantResolutionAttempted),
                         checkRequired("receivedAt", receivedAt),
                         additionalProperties.toMutableMap(),
@@ -22816,6 +22859,7 @@ private constructor(
                 }
 
                 cardholderCancellation().validate()
+                explanation()
                 merchantResolutionAttempted().validate()
                 receivedAt()
                 validated = true
@@ -22838,6 +22882,7 @@ private constructor(
             @JvmSynthetic
             internal fun validity(): Int =
                 (cardholderCancellation.asKnown().getOrNull()?.validity() ?: 0) +
+                    (if (explanation.asKnown().isPresent) 1 else 0) +
                     (merchantResolutionAttempted.asKnown().getOrNull()?.validity() ?: 0) +
                     (if (receivedAt.asKnown().isPresent) 1 else 0)
 
@@ -23405,6 +23450,7 @@ private constructor(
 
                 return other is ConsumerServicesNotAsDescribed &&
                     cardholderCancellation == other.cardholderCancellation &&
+                    explanation == other.explanation &&
                     merchantResolutionAttempted == other.merchantResolutionAttempted &&
                     receivedAt == other.receivedAt &&
                     additionalProperties == other.additionalProperties
@@ -23413,6 +23459,7 @@ private constructor(
             private val hashCode: Int by lazy {
                 Objects.hash(
                     cardholderCancellation,
+                    explanation,
                     merchantResolutionAttempted,
                     receivedAt,
                     additionalProperties,
@@ -23422,7 +23469,7 @@ private constructor(
             override fun hashCode(): Int = hashCode
 
             override fun toString() =
-                "ConsumerServicesNotAsDescribed{cardholderCancellation=$cardholderCancellation, merchantResolutionAttempted=$merchantResolutionAttempted, receivedAt=$receivedAt, additionalProperties=$additionalProperties}"
+                "ConsumerServicesNotAsDescribed{cardholderCancellation=$cardholderCancellation, explanation=$explanation, merchantResolutionAttempted=$merchantResolutionAttempted, receivedAt=$receivedAt, additionalProperties=$additionalProperties}"
         }
 
         /**
diff --git a/increase-java-core/src/main/kotlin/com/increase/api/models/carddisputes/CardDisputeSubmitUserSubmissionParams.kt b/increase-java-core/src/main/kotlin/com/increase/api/models/carddisputes/CardDisputeSubmitUserSubmissionParams.kt
index 50de11bf8..78ff0fad8 100644
--- a/increase-java-core/src/main/kotlin/com/increase/api/models/carddisputes/CardDisputeSubmitUserSubmissionParams.kt
+++ b/increase-java-core/src/main/kotlin/com/increase/api/models/carddisputes/CardDisputeSubmitUserSubmissionParams.kt
@@ -23386,6 +23386,7 @@ private constructor(
             @JsonCreator(mode = JsonCreator.Mode.DISABLED)
             private constructor(
                 private val cardholderCancellation: JsonField<CardholderCancellation>,
+                private val explanation: JsonField<String>,
                 private val merchantResolutionAttempted: JsonField<MerchantResolutionAttempted>,
                 private val receivedAt: JsonField<LocalDate>,
                 private val additionalProperties: MutableMap<String, JsonValue>,
@@ -23396,6 +23397,9 @@ private constructor(
                     @JsonProperty("cardholder_cancellation")
                     @ExcludeMissing
                     cardholderCancellation: JsonField<CardholderCancellation> = JsonMissing.of(),
+                    @JsonProperty("explanation")
+                    @ExcludeMissing
+                    explanation: JsonField<String> = JsonMissing.of(),
                     @JsonProperty("merchant_resolution_attempted")
                     @ExcludeMissing
                     merchantResolutionAttempted: JsonField<MerchantResolutionAttempted> =
@@ -23405,6 +23409,7 @@ private constructor(
                     receivedAt: JsonField<LocalDate> = JsonMissing.of(),
                 ) : this(
                     cardholderCancellation,
+                    explanation,
                     merchantResolutionAttempted,
                     receivedAt,
                     mutableMapOf(),
@@ -23420,6 +23425,15 @@ private constructor(
                 fun cardholderCancellation(): CardholderCancellation =
                     cardholderCancellation.getRequired("cardholder_cancellation")
 
+                /**
+                 * Explanation of what was ordered and was not as described.
+                 *
+                 * @throws IncreaseInvalidDataException if the JSON field has an unexpected type or
+                 *   is unexpectedly missing or null (e.g. if the server responded with an
+                 *   unexpected value).
+                 */
+                fun explanation(): String = explanation.getRequired("explanation")
+
                 /**
                  * Merchant resolution attempted.
                  *
@@ -23450,6 +23464,16 @@ private constructor(
                 fun _cardholderCancellation(): JsonField<CardholderCancellation> =
                     cardholderCancellation
 
+                /**
+                 * Returns the raw JSON value of [explanation].
+                 *
+                 * Unlike [explanation], this method doesn't throw if the JSON field has an
+                 * unexpected type.
+                 */
+                @JsonProperty("explanation")
+                @ExcludeMissing
+                fun _explanation(): JsonField<String> = explanation
+
                 /**
                  * Returns the raw JSON value of [merchantResolutionAttempted].
                  *
@@ -23492,6 +23516,7 @@ private constructor(
                      * The following fields are required:
                      * ```java
                      * .cardholderCancellation()
+                     * .explanation()
                      * .merchantResolutionAttempted()
                      * .receivedAt()
                      * ```
@@ -23503,6 +23528,7 @@ private constructor(
                 class Builder internal constructor() {
 
                     private var cardholderCancellation: JsonField<CardholderCancellation>? = null
+                    private var explanation: JsonField<String>? = null
                     private var merchantResolutionAttempted:
                         JsonField<MerchantResolutionAttempted>? =
                         null
@@ -23515,6 +23541,7 @@ private constructor(
                     ) = apply {
                         cardholderCancellation =
                             consumerServicesNotAsDescribed.cardholderCancellation
+                        explanation = consumerServicesNotAsDescribed.explanation
                         merchantResolutionAttempted =
                             consumerServicesNotAsDescribed.merchantResolutionAttempted
                         receivedAt = consumerServicesNotAsDescribed.receivedAt
@@ -23537,6 +23564,20 @@ private constructor(
                         cardholderCancellation: JsonField<CardholderCancellation>
                     ) = apply { this.cardholderCancellation = cardholderCancellation }
 
+                    /** Explanation of what was ordered and was not as described. */
+                    fun explanation(explanation: String) = explanation(JsonField.of(explanation))
+
+                    /**
+                     * Sets [Builder.explanation] to an arbitrary JSON value.
+                     *
+                     * You should usually call [Builder.explanation] with a well-typed [String]
+                     * value instead. This method is primarily for setting the field to an
+                     * undocumented or not yet supported value.
+                     */
+                    fun explanation(explanation: JsonField<String>) = apply {
+                        this.explanation = explanation
+                    }
+
                     /** Merchant resolution attempted. */
                     fun merchantResolutionAttempted(
                         merchantResolutionAttempted: MerchantResolutionAttempted
@@ -23598,6 +23639,7 @@ private constructor(
                      * The following fields are required:
                      * ```java
                      * .cardholderCancellation()
+                     * .explanation()
                      * .merchantResolutionAttempted()
                      * .receivedAt()
                      * ```
@@ -23607,6 +23649,7 @@ private constructor(
                     fun build(): ConsumerServicesNotAsDescribed =
                         ConsumerServicesNotAsDescribed(
                             checkRequired("cardholderCancellation", cardholderCancellation),
+                            checkRequired("explanation", explanation),
                             checkRequired(
                                 "merchantResolutionAttempted",
                                 merchantResolutionAttempted,
@@ -23624,6 +23667,7 @@ private constructor(
                     }
 
                     cardholderCancellation().validate()
+                    explanation()
                     merchantResolutionAttempted().validate()
                     receivedAt()
                     validated = true
@@ -23646,6 +23690,7 @@ private constructor(
                 @JvmSynthetic
                 internal fun validity(): Int =
                     (cardholderCancellation.asKnown().getOrNull()?.validity() ?: 0) +
+                        (if (explanation.asKnown().isPresent) 1 else 0) +
                         (merchantResolutionAttempted.asKnown().getOrNull()?.validity() ?: 0) +
                         (if (receivedAt.asKnown().isPresent) 1 else 0)
 
@@ -24219,6 +24264,7 @@ private constructor(
 
                     return other is ConsumerServicesNotAsDescribed &&
                         cardholderCancellation == other.cardholderCancellation &&
+                        explanation == other.explanation &&
                         merchantResolutionAttempted == other.merchantResolutionAttempted &&
                         receivedAt == other.receivedAt &&
                         additionalProperties == other.additionalProperties
@@ -24227,6 +24273,7 @@ private constructor(
                 private val hashCode: Int by lazy {
                     Objects.hash(
                         cardholderCancellation,
+                        explanation,
                         merchantResolutionAttempted,
                         receivedAt,
                         additionalProperties,
@@ -24236,7 +24283,7 @@ private constructor(
                 override fun hashCode(): Int = hashCode
 
                 override fun toString() =
-                    "ConsumerServicesNotAsDescribed{cardholderCancellation=$cardholderCancellation, merchantResolutionAttempted=$merchantResolutionAttempted, receivedAt=$receivedAt, additionalProperties=$additionalProperties}"
+                    "ConsumerServicesNotAsDescribed{cardholderCancellation=$cardholderCancellation, explanation=$explanation, merchantResolutionAttempted=$merchantResolutionAttempted, receivedAt=$receivedAt, additionalProperties=$additionalProperties}"
             }
 
             /**
diff --git a/increase-java-core/src/test/kotlin/com/increase/api/models/carddisputes/CardDisputeCreateParamsTest.kt b/increase-java-core/src/test/kotlin/com/increase/api/models/carddisputes/CardDisputeCreateParamsTest.kt
index e87fff3eb..96267c420 100644
--- a/increase-java-core/src/test/kotlin/com/increase/api/models/carddisputes/CardDisputeCreateParamsTest.kt
+++ b/increase-java-core/src/test/kotlin/com/increase/api/models/carddisputes/CardDisputeCreateParamsTest.kt
@@ -596,6 +596,7 @@ internal class CardDisputeCreateParamsTest {
                                     .reason("x")
                                     .build()
                             )
+                            .explanation("x")
                             .merchantResolutionAttempted(
                                 CardDisputeCreateParams.Visa.ConsumerServicesNotAsDescribed
                                     .MerchantResolutionAttempted
@@ -1307,6 +1308,7 @@ internal class CardDisputeCreateParamsTest {
                                         .reason("x")
                                         .build()
                                 )
+                                .explanation("x")
                                 .merchantResolutionAttempted(
                                     CardDisputeCreateParams.Visa.ConsumerServicesNotAsDescribed
                                         .MerchantResolutionAttempted
@@ -1990,6 +1992,7 @@ internal class CardDisputeCreateParamsTest {
                                     .reason("x")
                                     .build()
                             )
+                            .explanation("x")
                             .merchantResolutionAttempted(
                                 CardDisputeCreateParams.Visa.ConsumerServicesNotAsDescribed
                                     .MerchantResolutionAttempted
diff --git a/increase-java-core/src/test/kotlin/com/increase/api/models/carddisputes/CardDisputeListPageResponseTest.kt b/increase-java-core/src/test/kotlin/com/increase/api/models/carddisputes/CardDisputeListPageResponseTest.kt
index 1a5e31587..df26e5669 100644
--- a/increase-java-core/src/test/kotlin/com/increase/api/models/carddisputes/CardDisputeListPageResponseTest.kt
+++ b/increase-java-core/src/test/kotlin/com/increase/api/models/carddisputes/CardDisputeListPageResponseTest.kt
@@ -1202,6 +1202,7 @@ internal class CardDisputeListPageResponseTest {
                                                                 .reason("reason")
                                                                 .build()
                                                         )
+                                                        .explanation("explanation")
                                                         .merchantResolutionAttempted(
                                                             CardDispute.Visa.UserSubmission
                                                                 .Chargeback
@@ -2507,6 +2508,7 @@ internal class CardDisputeListPageResponseTest {
                                                             .reason("reason")
                                                             .build()
                                                     )
+                                                    .explanation("explanation")
                                                     .merchantResolutionAttempted(
                                                         CardDispute.Visa.UserSubmission.Chargeback
                                                             .ConsumerServicesNotAsDescribed
@@ -3881,6 +3883,7 @@ internal class CardDisputeListPageResponseTest {
                                                                 .reason("reason")
                                                                 .build()
                                                         )
+                                                        .explanation("explanation")
                                                         .merchantResolutionAttempted(
                                                             CardDispute.Visa.UserSubmission
                                                                 .Chargeback
diff --git a/increase-java-core/src/test/kotlin/com/increase/api/models/carddisputes/CardDisputeSubmitUserSubmissionParamsTest.kt b/increase-java-core/src/test/kotlin/com/increase/api/models/carddisputes/CardDisputeSubmitUserSubmissionParamsTest.kt
index 9c006ab43..27c943896 100644
--- a/increase-java-core/src/test/kotlin/com/increase/api/models/carddisputes/CardDisputeSubmitUserSubmissionParamsTest.kt
+++ b/increase-java-core/src/test/kotlin/com/increase/api/models/carddisputes/CardDisputeSubmitUserSubmissionParamsTest.kt
@@ -735,6 +735,7 @@ internal class CardDisputeSubmitUserSubmissionParamsTest {
                                             .reason("x")
                                             .build()
                                     )
+                                    .explanation("x")
                                     .merchantResolutionAttempted(
                                         CardDisputeSubmitUserSubmissionParams.Visa.Chargeback
                                             .ConsumerServicesNotAsDescribed
@@ -1639,6 +1640,7 @@ internal class CardDisputeSubmitUserSubmissionParamsTest {
                                                 .reason("x")
                                                 .build()
                                         )
+                                        .explanation("x")
                                         .merchantResolutionAttempted(
                                             CardDisputeSubmitUserSubmissionParams.Visa.Chargeback
                                                 .ConsumerServicesNotAsDescribed
@@ -2512,6 +2514,7 @@ internal class CardDisputeSubmitUserSubmissionParamsTest {
                                             .reason("x")
                                             .build()
                                     )
+                                    .explanation("x")
                                     .merchantResolutionAttempted(
                                         CardDisputeSubmitUserSubmissionParams.Visa.Chargeback
                                             .ConsumerServicesNotAsDescribed
diff --git a/increase-java-core/src/test/kotlin/com/increase/api/models/carddisputes/CardDisputeTest.kt b/increase-java-core/src/test/kotlin/com/increase/api/models/carddisputes/CardDisputeTest.kt
index c7ad5aa82..6334810d2 100644
--- a/increase-java-core/src/test/kotlin/com/increase/api/models/carddisputes/CardDisputeTest.kt
+++ b/increase-java-core/src/test/kotlin/com/increase/api/models/carddisputes/CardDisputeTest.kt
@@ -1050,6 +1050,7 @@ internal class CardDisputeTest {
                                                         .reason("reason")
                                                         .build()
                                                 )
+                                                .explanation("explanation")
                                                 .merchantResolutionAttempted(
                                                     CardDispute.Visa.UserSubmission.Chargeback
                                                         .ConsumerServicesNotAsDescribed
@@ -2207,6 +2208,7 @@ internal class CardDisputeTest {
                                                     .reason("reason")
                                                     .build()
                                             )
+                                            .explanation("explanation")
                                             .merchantResolutionAttempted(
                                                 CardDispute.Visa.UserSubmission.Chargeback
                                                     .ConsumerServicesNotAsDescribed
@@ -3407,6 +3409,7 @@ internal class CardDisputeTest {
                                                         .reason("reason")
                                                         .build()
                                                 )
+                                                .explanation("explanation")
                                                 .merchantResolutionAttempted(
                                                     CardDispute.Visa.UserSubmission.Chargeback
                                                         .ConsumerServicesNotAsDescribed
diff --git a/increase-java-core/src/test/kotlin/com/increase/api/services/async/CardDisputeServiceAsyncTest.kt b/increase-java-core/src/test/kotlin/com/increase/api/services/async/CardDisputeServiceAsyncTest.kt
index c8e7ef1c8..3c15debd9 100644
--- a/increase-java-core/src/test/kotlin/com/increase/api/services/async/CardDisputeServiceAsyncTest.kt
+++ b/increase-java-core/src/test/kotlin/com/increase/api/services/async/CardDisputeServiceAsyncTest.kt
@@ -659,6 +659,7 @@ internal class CardDisputeServiceAsyncTest {
                                             .reason("x")
                                             .build()
                                     )
+                                    .explanation("x")
                                     .merchantResolutionAttempted(
                                         CardDisputeCreateParams.Visa.ConsumerServicesNotAsDescribed
                                             .MerchantResolutionAttempted
@@ -1600,6 +1601,7 @@ internal class CardDisputeServiceAsyncTest {
                                                     .reason("x")
                                                     .build()
                                             )
+                                            .explanation("x")
                                             .merchantResolutionAttempted(
                                                 CardDisputeSubmitUserSubmissionParams.Visa
                                                     .Chargeback
diff --git a/increase-java-core/src/test/kotlin/com/increase/api/services/blocking/CardDisputeServiceTest.kt b/increase-java-core/src/test/kotlin/com/increase/api/services/blocking/CardDisputeServiceTest.kt
index 1d6a64919..7417ab147 100644
--- a/increase-java-core/src/test/kotlin/com/increase/api/services/blocking/CardDisputeServiceTest.kt
+++ b/increase-java-core/src/test/kotlin/com/increase/api/services/blocking/CardDisputeServiceTest.kt
@@ -659,6 +659,7 @@ internal class CardDisputeServiceTest {
                                             .reason("x")
                                             .build()
                                     )
+                                    .explanation("x")
                                     .merchantResolutionAttempted(
                                         CardDisputeCreateParams.Visa.ConsumerServicesNotAsDescribed
                                             .MerchantResolutionAttempted
@@ -1596,6 +1597,7 @@ internal class CardDisputeServiceTest {
                                                     .reason("x")
                                                     .build()
                                             )
+                                            .explanation("x")
                                             .merchantResolutionAttempted(
                                                 CardDisputeSubmitUserSubmissionParams.Visa
                                                     .Chargeback