EmbeddableClientAppSdk manages the serialization logic for schema definitions in a specific manner, so constructing the update payload requires precise mapping between the fieldDefinitions array and the relationshipReferences object. First, the script builds the JSON matrix with data type constraints. Second, it validates against the maximum field count limit. Third, it sends the request via PUT /api/v2/customobjects/schemadefinitions/{id}. When two admin sessions trigger the updater simultaneously, the API returns a 409 Conflict instead of applying the optimistic locking header correctly.
Environment specs and steps tried:
- Node.js v18.17 with
axiosfor HTTP calls - Target endpoint:
/api/v2/customobjects/schemadefinitions/cdo_12345 - Payload includes
fields: [{ name: "customerTier", type: "string", maxLength: 50 }] - Added
If-Match: *header to force overwrite, but the conflict persists - Webhook callback for external sync triggers immediately after the PUT request
The validation pipeline checks backward compatibility by comparing the old schemaVersion against the new structure. We’ve noticed the optimistic locking fails when the relationship reference directive points to a parent object that hasn’t finished its own migration path. Latency tracking shows 1.2 seconds. Server probably waiting on a referential integrity lock. Can’t figure out if the If-Match header needs the exact ETag from the previous GET request or if the atomic PUT operation just rejects concurrent writes entirely. The webhook payload shows the old schema version still active in the event stream.