Planning or delivery frequency &1 not allowed for plant &2

What causes this issue?

The specified replenishment or delivery cycle is neither assigned to the
current plant, nor to its reference plant.

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

System Response

How to fix this error?

Correct the delivery cycle.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.