diff --git a/apps/meteor/app/slashcommands-invite/server/server.ts b/apps/meteor/app/slashcommands-invite/server/server.ts
index 62bd283351bf1..583a70a202be2 100644
--- a/apps/meteor/app/slashcommands-invite/server/server.ts
+++ b/apps/meteor/app/slashcommands-invite/server/server.ts
@@ -112,12 +112,15 @@ slashCommands.add({
 					);
 				} catch (e: unknown) {
 					if (isMeteorError(e)) {
-						const details = Array.isArray(e.details) ? e.details.join(', ') : '';
-
-						void api.broadcast('notify.ephemeralMessage', userId, message.rid, {
-							msg: i18n.t(e.message, { lng: settings.get('Language') || 'en', details: `\`${details}\`` }),
-						});
-						return;
+						if (e.error === 'error-only-compliant-users-can-be-added-to-abac-rooms') {
+							void api.broadcast('notify.ephemeralMessage', userId, message.rid, {
+								msg: i18n.t(e.error, { lng: settings.get('Language') || 'en' }),
+							});
+						} else {
+							void api.broadcast('notify.ephemeralMessage', userId, message.rid, {
+								msg: i18n.t(e.message, { lng: settings.get('Language') || 'en' }),
+							});
+						}
 					}
 
 					if (isStringError(e)) {
diff --git a/apps/meteor/tests/end-to-end/api/abac.ts b/apps/meteor/tests/end-to-end/api/abac.ts
index c82a1984234b4..4ca7233284761 100644
--- a/apps/meteor/tests/end-to-end/api/abac.ts
+++ b/apps/meteor/tests/end-to-end/api/abac.ts
@@ -1561,7 +1561,7 @@ const addAbacAttributesToUserDirectly = async (userId: string, abacAttributes: I
 				.expect(400)
 				.expect((res) => {
 					expect(res.body).to.have.property('success', false);
-					expect(res.body).to.have.property('error').that.includes('error-usernames-not-matching-abac-attributes');
+					expect(res.body).to.have.property('errorType', 'error-only-compliant-users-can-be-added-to-abac-rooms');
 				});
 		});
 
diff --git a/ee/packages/abac/src/errors.ts b/ee/packages/abac/src/errors.ts
index 490ace6c9b7f1..0b7072c39b617 100644
--- a/ee/packages/abac/src/errors.ts
+++ b/ee/packages/abac/src/errors.ts
@@ -7,9 +7,9 @@ export enum AbacErrorCode {
 	AttributeDefinitionNotFound = 'error-attribute-definition-not-found',
 	RoomNotFound = 'error-room-not-found',
 	CannotConvertDefaultRoomToAbac = 'error-cannot-convert-default-room-to-abac',
-	UsernamesNotMatchingAbacAttributes = 'error-usernames-not-matching-abac-attributes',
 	AbacUnsupportedObjectType = 'error-abac-unsupported-object-type',
 	AbacUnsupportedOperation = 'error-abac-unsupported-operation',
+	OnlyCompliantCanBeAddedToRoom = 'error-only-compliant-users-can-be-added-to-abac-rooms',
 }
 
 export class AbacError extends Error {
@@ -85,3 +85,9 @@ export class AbacUnsupportedOperationError extends AbacError {
 		super(AbacErrorCode.AbacUnsupportedOperation, details);
 	}
 }
+
+export class OnlyCompliantCanBeAddedToRoomError extends AbacError {
+	constructor(details?: unknown) {
+		super(AbacErrorCode.OnlyCompliantCanBeAddedToRoom, details);
+	}
+}
diff --git a/ee/packages/abac/src/index.ts b/ee/packages/abac/src/index.ts
index 0b58931ba8796..efa9988e5efb3 100644
--- a/ee/packages/abac/src/index.ts
+++ b/ee/packages/abac/src/index.ts
@@ -1,4 +1,4 @@
-import { MeteorError, Room, ServiceClass } from '@rocket.chat/core-services';
+import { Room, ServiceClass } from '@rocket.chat/core-services';
 import type { AbacActor, IAbacService } from '@rocket.chat/core-services';
 import { AbacAccessOperation, AbacObjectType } from '@rocket.chat/core-typings';
 import type {
@@ -25,6 +25,7 @@ import {
 	AbacInvalidAttributeValuesError,
 	AbacUnsupportedObjectTypeError,
 	AbacUnsupportedOperationError,
+	OnlyCompliantCanBeAddedToRoomError,
 } from './errors';
 import {
 	getAbacRoom,
@@ -480,11 +481,7 @@ export class AbacService extends ServiceClass implements IAbacService {
 		const nonCompliantSet = new Set<string>(nonCompliantUsersFromList);
 
 		if (nonCompliantSet.size) {
-			throw new MeteorError(
-				'error-usernames-not-matching-abac-attributes',
-				'Some usernames do not comply with the ABAC attributes for the room',
-				Array.from(nonCompliantSet),
-			);
+			throw new OnlyCompliantCanBeAddedToRoomError();
 		}
 
 		usernames.forEach((username) => {
diff --git a/ee/packages/abac/src/service.spec.ts b/ee/packages/abac/src/service.spec.ts
index f80c00407bb37..8b7bc98bf414a 100644
--- a/ee/packages/abac/src/service.spec.ts
+++ b/ee/packages/abac/src/service.spec.ts
@@ -1076,7 +1076,7 @@ describe('AbacService (unit)', () => {
 			);
 		});
 
-		it('rejects with error-usernames-not-matching-abac-attributes and details for non-compliant users', async () => {
+		it('rejects with error-only-compliant-users-can-be-added-to-abac-rooms and details for non-compliant users', async () => {
 			const usernames = ['alice', 'bob', 'charlie'];
 			const nonCompliantDocs = [{ username: 'bob' }, { username: 'charlie' }];
 			mockUsersFind.mockImplementationOnce(() => ({
@@ -1086,9 +1086,7 @@ describe('AbacService (unit)', () => {
 			}));
 
 			await expect(service.checkUsernamesMatchAttributes(usernames, attributes as any, 'objectId')).rejects.toMatchObject({
-				error: 'error-usernames-not-matching-abac-attributes',
-				message: expect.stringContaining('[error-usernames-not-matching-abac-attributes]'),
-				details: expect.arrayContaining(['bob', 'charlie']),
+				code: 'error-only-compliant-users-can-be-added-to-abac-rooms',
 			});
 		});
 
@@ -1119,7 +1117,7 @@ describe('AbacService (unit)', () => {
 			}));
 
 			await expect(service.checkUsernamesMatchAttributes(usernames, attributes as any, 'objectId')).rejects.toMatchObject({
-				error: 'error-usernames-not-matching-abac-attributes',
+				code: 'error-only-compliant-users-can-be-added-to-abac-rooms',
 			});
 
 			expect(mockCreateAuditServerEvent).not.toHaveBeenCalled();
diff --git a/packages/i18n/src/locales/en.i18n.json b/packages/i18n/src/locales/en.i18n.json
index 78586f4751c82..e21297e696e6f 100644
--- a/packages/i18n/src/locales/en.i18n.json
+++ b/packages/i18n/src/locales/en.i18n.json
@@ -6352,6 +6352,7 @@
   "error-not-authorized": "Not authorized",
   "error-not-authorized-federation": "Not authorized to access federation",
   "error-office-hours-are-closed": "The office hours are closed.",
+  "error-only-compliant-users-can-be-added-to-abac-rooms": "Only compliant users can be added to ABAC rooms.",
   "error-password-in-history": "Entered password has been previously used",
   "error-password-policy-not-met": "Password does not meet the server's policy",
   "error-password-policy-not-met-maxLength": "Password does not meet the server's policy of maximum length (password too long)",
@@ -6378,6 +6379,7 @@
   "error-room-is-not-closed": "Room is not closed",
   "error-room-not-on-hold": "Error! Room is not On Hold",
   "error-room-onHold": "Error! Room is On Hold",
+  "error-room-is-abac-managed": "This room is ABAC managed and new users cannot be added",
   "error-adding-monitor": "Error adding monitor",
   "error-saving-sla": "An error ocurred while saving the SLA",
   "error-selected-agent-room-agent-are-same": "The selected agent and the room agent are the same",