You have not specified a PA transfer structure or value fields (fxd/var.)

What causes this issue?

Operating concern &V1& was defined for costing-based or both forms of
analysis. In this case, you must assign the CO-OM costs to value
fields. You can do this by specifying value fields explicitly or by
specifying a PA transfer structure.
If you explicitly specify value fields, and if account-based CO-PA is
also active, you need to enter a value field for the fixed costs AND a
value field for the variable costs, otherwise the system will only
transfer one of those cost types to account-based CO-PA.

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?

Enter either a PA transfer structure or value fields for the costs.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.