Key date for master recipe is outside the validity of the general recipe

What causes this issue?

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

System Response

The key date for the master recipe must be within the validity area
of the general recipe. If it is not within this validity area, the
system sets the key date to the valid-from date of the general recipe
automatically.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.