You have no authorization to plan a business event

What causes this issue?

You do not have either the transaction authorization, a structural
authorization or a Basis authorization required for planning a business
event.

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?

In Customizing, maintain the missing authorizations. If you do not have
authorization to do this, contact whoever is responsible and request
that they do it.

Error message extract from SAP system. Copyright SAP SE.