The Salesforce CRM Connector is configured and the Case object data stream is set up. Subsequently, a new custom field named Business Priority is…

The Salesforce CRM Connector's integration user requires explicit Field-Level Security (FLS) permissions to access any new fields created on an object in the source CRM org. If the integration user does not have at least "Read" access to the new "Business Priority" custom field, Data Cloud cannot see or ingest it. The data stream's schema must then be manually refreshed after the permissions are granted.

B. The Salesforce Data Loader: This is a data import/export tool and is not used for managing the metadata schema of a data stream.

C. Custom fields on the Case object are not supported: This is incorrect. The Salesforce CRM Connector fully supports custom fields on standard objects like Case.

D. After 24 hours when the data stream refreshes: A data stream refresh ingests new or updated data, not metadata changes like new fields. Schema changes require permission updates and a manual refresh.

- Salesforce Help, Salesforce CRM Connector. In the "Set Up the Salesforce CRM Connector" section, it emphasizes the need for the integration user to have read access to all objects and fields intended for data ingestion.

- Salesforce Help, Edit a Salesforce CRM Data Stream. This page explains that after adding a new field in the source org and granting permissions, you must edit the data stream in Data Cloud to add the new field.