Solution
Tried and tested values with cost fields doubled to 80 fields are already available for the primary cost component split in CO-OM and CO-PA. If you require even more fields or if you are using this function in costing or in the material ledger, you require a more rigorous test. This is because no tried and tested values are available for these areas.
From Release 4.5: to Release 4.6B
Add the required number of cost fields to the KEPH table. Make sure that the numbering of field names is continuous throughout.
As of Release 4.6C:
Add the required number of cost fields to structure CKF_COST_COMPONENTS. Make sure that the numbering of field names is continuous throughout.
All releases as of Release 4.5:
Add the new cost fields to database view COOMCO.
Change the constant CK_G_PH in Include FCKGLOBA from 40 to the new number of cost fields.