The 'Subarea' enhancement of payment card data is not generated

What causes this issue?

To use parallel billing of payment card data, you need the enhancement
for the <LS>Subarea</> field (field name KEYPP). This enhancement is not
active in the current client.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Check if you should make this enhancement by using report
RFKK_ENH_CCARD.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.