SAP Message >6506 - For correspondence type &1, interface is missing for BAdI defintion &2

Trados = docu -> fi -> fica -> fica.tmw Diagnosis In Customizing for the correspondence type &V1&,the BAdIdefinition &V2& isspecified, but no interface can be determined for this definition. System Response The event cannot be processed for the BAdI &V2&. Procedure for System Administration Check and correct the BAdI definition &V2&.