Condition class & is not suitable for use as a fee (T685A).

What causes this issue?

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

System Response

How to fix this error?

Check if the entered condition class is correct. Check the entries in
the <GL:Customizing>Customizing</> table T685A ( proceed transaction
<DS:TRAN.M/06>M/06</> ).
INCLUDE 'NA_CKSYSAD_AN'

Error message extract from SAP system. Copyright SAP SE.