Validation: Clarification needed for rule pd10130 ([NOT SURE])

[Muneesh1929]

Hi,

Following up in the correct context as suggested.

While reviewing the SBGN Process Description validation rules under validation/rules/sbgn_pd.sch, I noticed that rule pd10130 contains a placeholder assertion message [NOT SURE]:

<iso:pattern id="pd10130">
  <iso:assert id="pd10130">[NOT SURE]</iso:assert>
</iso:pattern>

I tried to locate the rationale for this constraint in the SBGN PD specification (particularly
sections related to complexes and their subunits), but I couldn’t find a clear statement that
directly explains this rule.

My current guess is that this rule may be intended to restrict arcs originating from subunits
of a complex to modulation type arcs only but the intent is not obvious from the spec text.

Could you please advise whether:

this rule should be clarified with a proper diagnostic message, marked as unimplemented, or handled using a different validation mechanism than Schematron?

Thanks!

[adrienrougny]

I think you're right, the rule says that. I also believe there's no rationale for this rule in the current version of the spec.
Actually, in L1V2.0 (and L1V2.1 which has been published today), I don't think a subunit can be the source or the target of an arc, independently of its type.