I have reviewed this document as part of the Ops area directorate's ongoing effort to review all IETF documents being processed by the IESG.  These comments were written primarily for the benefit of the Ops area directors.
Document editors and WG chairs should treat these comments just like any other last-call comments.

Summary: This document specifies a data model for sharing data between users using JMAP (JSON Meta Application Protocol), aiming to establish a consistent model for sharing across various data types. 

Major Issue: I think it is necessary to have a section on Error Handling to outline common error scenarios, categorization of error types, and recommended actions for error resolution. 

Thank you very much, 

Linda Dunbar