You have no authorization to use the functionality

What causes this issue?

Authorization error.,,

System Response

You have no authorization to use the functionality.,,

How to fix this error?

As of service pack 4.6C SP1, this functionality is restricted to use.
Hence certain authorization has been maintained.
Please contact your system Administrator.

Procedure for System Administrators

If you think the user should have the authorization to this use
functionality, please give the access to Auth. Object 'O_OIC_IAP'.

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

Error message extract from SAP system. Copyright SAP SE.