You are not authorized to use transaction &

What causes this issue?

You have chosen a special transaction that can only be used to a
limited extent in the productive system. Inconsistent datasets can
occur when it is not used improperly.

System Response

A special authorization must be available at the start of the
transaction.

How to fix this error?

Please clarify whether, in this instance, it is possible to carry out
the transaction in question without any problems. If necessary, please
contact your system administrator.

Error message extract from SAP system. Copyright SAP SE.