Message SAP WTADDI501 - EDI partner agreement &/& does not exist

Diagnosis
You want to generate an IDoc foradditionals that is to besent to the system with partner type &V1& and partner number &V2&. Thisconnection does not exist.

System Response
No additionals IDoc has been generated.

Procedure
Check your entry. If you have the authorization to maintain an entry,you can do so using transaction WE20 (execute function
).

Notes
You must assign the logical message category to the partner agreementfor the additional.