When new attributes are added to anXDM Schema, several technical failure points must be verified to ensure data flows correctly into theReal-Time Customer Profile. The first and most critical investigation step is to review the schema and the ingestion payload mapping.

In Adobe Experience Platform, simply adding a field to a schema does not automatically populate it; the ingestion source (the REST API payload in this case) must have the new field mapped exactly to the correct XDM path. If there is a mismatch in the field name (e.g., preferred_channel vs. preferredChannel) or if the field was added to the schema but not "enabled for profile," the data will land in theData Lakebut will be ignored by theProfile Service.

Option A and D are unlikely to be the cause if other parts of the profile are updating correctly. Option C is rarely the issue for specific field missingness, as capacity issues usually result in total ingestion failure or significant latency across all fields. By verifying thePayload-to-XDM mappingand ensuring the schema is marked forProfile, the engineer can confirm that the data is being correctly recognized and stored within the customer's unified view.