Hello Trevor
The project definition you are trying to create has 4 characters "APCS" and the coding mask is only customized for 1 character. check OPSK---> PL=1
You can create only projects with 1 character A-XXXX-XX as mentioned in error.
If you want to have 4 character then you will have to change the customization but is irreversable after you create a project so think 100 times before you make any changes
Award points if answered.
Regards
Praveen B.K