Document &1 has already been released and can no longer be changed
Message type: E = Error
Message class: AH - IS-U billing (master data)
Message number: 611
Message text: Document &1 has already been released and can no longer be changed
What causes this issue?
Document &v1& has already been released and can no longer be changed.
System Response
The document has already been released for invoicing can therefore no
longer be changed.
How to fix this error?
Delete the document and create a new one.
Error message extract from SAP system. Copyright SAP SE.