Diagnosis
There is already more than one equity type assigned to this jointventure.
With the transaction for simplifying joint venture master dataprocessing, only one equity type can be assigned to a joint venture.When creating a joint venture, the system transfers the equity typefrom the assigned joint venture master data profile. Another equitytype is not allowed. Therefore you can not use this transaction forprocessing and editing joint ventures.

System Response
Processing is cancelled.

Procedure
To edit the JOA, use transaction GJAA .
To edit the joint venture, use transaction GJVV.