Data Cloud: Restrictions on Mapping Standard DMO When Custom DMO Exists with Same API Name

Salesforce has introduced a new restriction to prevent mapping to a Standard DMO when a Custom DMO with the same name exists (e.g., ssot_Account__dlm and Account__dlm). This change is designed to prevent conflicts between custom and standard DMOs that could lead to errors during the mapping process.

If an organization already has a Custom DMO with the same name as a Standard DMO, mapping to the Standard DMO will be restricted. However, customers will still be able to map to the Custom DMO. This restriction helps ensure clarity and consistency by avoiding conflicts between the standard and custom versions of the same object.

Customers who already have mappings using a Custom DMO can continue to edit these mappings through the mappings screen. The restriction applies specifically to Standard DMO mappings when a Custom DMO with the same name exists.