SAP Message V1777 - Contract data cannot be edited for document type &1

Diagnosis The referencing procedure &V2& contains contract data fields. System Response According to the settings in Customizing, creating contract data hasnot been defined for document type &V1&. The system deletes the reference to master contract &V3&. Procedure You can only create the reference by changing Customizing so thatcontract data can be used for that document type, or by deleting thefields for table VEDA in the referencing procedure.