Invoice document & / & cannot be deleted

What causes this issue?

You attempted to delete invoice document &V1&/&V2&. This is, however,
not possible, as the document has already been posted, as can be seen
from Invoice Verification status &V3&.

System Response

You are not allowed to delete the document.

How to fix this error?

You can only remove the document from the system using the
reorganization process.
You can cancel the document.

Error message extract from SAP system. Copyright SAP SE.