Our integration sends employee information from Cascade HR to SAP Concur. We either Create or Patch users in SAP Concur.  We've had it working for a few weeks perfectly fine, then on w/c on 24th of March we have noticed that "Create" operations fail with the following error: 

{ "code" : "UNKNOWN", "message" : "Error Syncing User", "schemaPath" : "urn:ietf:params:scim:schemas:extension:spend:2.0:User", "type" : "error" }

It's important to note that the SAP Concur ID is created for the employee. Querying SAP Concur in Postman using the ID returns the employee data. 

Attempting to subsequently "Patch" that employee ends up with the same error. 

Meanwhile,  normal "Patch" operations work as expected. 

Has anyone else encountered the issue? 
Does anyone know what the issue could be?