Unexpected validation error regarding file ID format in E-ARK AIP package

[pecajt]

In our E-ARK AIP packages, we use UUIDs to identify files.
During validation (using profile 2.2.0), we encounter the following error:
     "specification": "AIP-",
      "id": "AIP9",
"name": "File ID",
"location": "file/@id",
"description": "Identifier of a file which is part of the AIP File identifier; must be unique and start with the prefix ID",
"cardinality": "0..1",
"level": "MUST",
"testing": {
"outcome": "FAILED",
"issues": [
"The mets/fileSec/fileGrp/file/@id must start with ID in uuid-aa3dd72c-9a2d-4dd4-b9f6-3b5fae69295cdoes not start with ID"
],
"warnings": [],
"notes": []
}

However, this validation rule (AIP9) does not appear in the official AIP specification at https://earkaip.dilcis.eu/, and it is unclear which rule this check is based on.
In our understanding, using a prefix in file identifiers is recommended but not mandatory. Moreover, the documentation explicitly mentions UUIDs (without the "ID" prefix) as an alternative example.
See section 5.1.7 of the AIP specification 2.2.0: https://earkaip.dilcis.eu/#metsidentifier
Here is an example of the fileSec from our package that triggers the error:

[dosubot]

Hi, @pecajt. I'm Dosu, and I'm helping the commons-ip team manage their backlog and am marking this issue as stale.

Issue Summary:

• You reported that the E-ARK AIP validator throws an AIP9 validation error when UUIDs are used as file IDs without the "ID." prefix.
• You pointed out that the official AIP 2.2.0 specification does not require the "ID." prefix for UUIDs.
• The issue remains unresolved with no further comments or updates.
• The validator's enforcement of this rule is unclear and needs clarification.

Next Steps:

• Please let me know if this issue is still relevant with the latest version of the commons-ip repository by commenting here.
• If I do not hear back within 7 days, this issue will be automatically closed.

Thank you for your understanding and contribution!

[pecajt]

Thank you for the answer, the issue is still relevant, it also appears in the current version (2.11.2).

[dosubot]

@luis100 The user has confirmed that the issue with the E-ARK AIP validator throwing an AIP9 validation error for UUIDs without the "ID." prefix is still relevant in version 2.11.2. Could you please assist with this?