You have no authorization for posting with document type &

What causes this issue?

You do not have the authorization to edit the above-mentioned object.

System Response

The desired process is not executed.

How to fix this error?

Providing your entries are correct, see to it that you are given the
authorization for the authorization group specified for document type
and for the activity "01". The authorization object is "F_BKPF_BLA".

Error message extract from SAP system. Copyright SAP SE.