There is no rule & for determining the variant for the work schedule

What causes this issue?

In Customizing for the daily work schedule, you have specified a non-
existent rule for determining the variant.

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?

Define the missing rule &V1& in the Customizing transaction 'Rules for
determining variants for generating work schedules'.

Error message extract from SAP system. Copyright SAP SE.