You have no authorization for posting period & &

What causes this issue?

Period &V1& of fiscal year &V2& is open for postings for ledger &V3&
and business transaction &V3&. However, you do not have the required
authorization.

System Response

Processing is terminated.

How to fix this error?

This error can have various causes. To resolve the error, proceed as
follows:
Check whether the posting date is entered correctly. The system uses
this date to determine the posting period.
Check the authorization group that was defined for the combination of
ledger and posting period.
Provide the missing authorization in the authorization profile.

Error message extract from SAP system. Copyright SAP SE.