SAP Message VK335 - Agreement type & cannot be processed using this transaction

Diagnosis
You try to edit an agreement with agreement type &V1& (&V2&).
The agreement type &V1& is of type &V3&.
With the transaction that you selected, only agreements of type &V4&can be edited.

System Response
Processing an agreement of type &V3& is not possible with thistransaction.

Procedure
Please select another agreement type/agreement or choose thecorresponding transaction for editing agreements of type &V3&.