Resource &1 in operation &2 can only be used until release

What causes this issue?

You want to plan or release operation &V2&.

System Response

Resource &V1& of this operation is only allowed up to release.
Whether a resource is only allowed up to release, is determined by
the task list usage (resource basic data).

How to fix this error?

Changed the resource of operation &V2&.

Error message extract from SAP system. Copyright SAP SE.