Hi SAP Community,
There is nary circumstantial app/activity to configure Sales Costing Variant PPC4, but you tin cheque the parameters assigned to the related Valuation Variant (Costing Variant PPC4 is assigned with Valuation Variant 001).
To configure Valuation Variants, you tin usage Configuration Activity / SSCUI "Define Valuation Variants per Plant".
You tin besides notation to the beneath KBA:
3350673 - How to cheque Costing/Valuation Variants for Sales Costing
Best Regards,
SAP Support