Rate change is only possible after dynamic backbilling

What causes this issue?

On &v1& you changed from rate category &v2& (that bills with dynamic
period control from basic category <ZH>determination of current periods
by meter reading results</>) to rate category &v3& (from category
<ZH>estimation of meter reading results in billing</>). However, a rate
category change like this is only possible directly after dynamic
backbilling with an actual meter reading result.

System Response

Processing is canceled.

How to fix this error?

Change the rate category after a dynamic backbilling.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.