Diagnosis
Partner function &V1& is assigned to your vendor at level &V3&. Partnerschema &V2& is valid at level &V3& in the new account group &V4& youselected. Partner function &V1& is not defined in this partner schema.
By changing the account group, partner functions were assigned to yourvendor which are not allowed.

System Response
A change to the account group is not allowed.

Procedure
Please change the partner schemas for the account groups inCustomizing.