SAP Message /SAPPCE/JVAM1023 - Enter the required data

Diagnosis
You must enter the company code and the JV master data profile.
If a venture class that requires an external number assignment isdefined in the JV master data profile, you must also enter the venturename.

Procedure
Enter the company code.
Enter the JV master data profile.
If an external number assignment is required also enter a valid venturename.
The venture name is valid if it lies in the number range interval thatis calculated in the JV master data profile using the venture class.