Errors were found in the derivation structures

What causes this issue?

The derivation structures are inconsistent.

System Response

The operating concern was activated. However, errors may occur during
derivation of characteristic values.

How to fix this error?

Execute transaction KE05 and choose the function "Extras -> Regenerate".
The system should regenerate the programs and screens for all the
derivation structures. If errors occur again, see the long texts of the
error messages, and take any actions described there. If you cannot
correct the errors in this manner, contact the SAP hotline.

Error message extract from SAP system. Copyright SAP SE.