I have migrated a billdoc via billdocebf, now trying to run adjustment reversal on this document but follwoign error occurs.
Billing document 500000000412 originates from the legacy system and is not marked as reversible.
Billing documents from a legacy system can only be reversed for adjustment; this means they can be reversed in billing only - not in invoicing. However, this is not possible in this case.
The billing document is required for technical reasons - such as establishing the new start of billing - and to provide information.
If necessary, create a credit memo/backbilling using the Manual Billing function
I have also generate the indicator nocanc = "Indicator: do not execute billing reversal" but still not working.