2746779 - Different Costing Variants in different Apps

You can check Costing Variants with App Check Costing Variant. You can see another set of Costing Variants in the SSCUI ID 102431 (Order Type settings).

SAP S/4HANA Cloud Public Edition

1.  Check Costing Variants with App Check Costing Variant.
2.  Check Costing Variants in the SSCUI setting 102431.
3.  Compare the settings.

The Costing Variants you checked in App "Check Costing Variants" are the Costing Variants used for Standard Costing (App: Edit Costing Runs).
The Costing Variants in the order type setting are different ones.
They are used for determining the planned costs and actual costs of the Order.

You can check and modify the Costing Variants for orders via editting the corresponding Valuation Variants using SSCUI 102608.

Below are the pairings:
Cositng Variant - Valuation Variant
PSRM - 0RM
PYG1 - 0Y6
PYG2 - 0Y7
PYC1 - 0Y1
PYC2 - 0Y2
PYR1 - YR6
PYR2 - YR7

It's explained in "Cause" part.

Standard Cost Estimate, Planned Costs, OKKN, OPL1, Valuation Variant, CK11N, CK40N, Costing Run. , KBA , CO-PC-PCP-2CL , Product Cost Planning (Public Cloud) , How To