No authorization for release group & and release code &

What causes this issue?

You have no authorization to release under this release group and this
release code. Therefore you cannot release the document.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Check your input and amend it if necessary.
You can obtain information on the release strategy in the service entry
sheet via the menu "Goto -> Display release strategy".
If you need authorization to release, contact your system
administrator.
The authorization object for release purposes is M_EINK_FRG.

Error message extract from SAP system. Copyright SAP SE.