No changes to: &1 &2 &3 &4

What causes this issue?

No changes have been made on the relevant days for at least the
following employees: <(>&<)>v1&, <(>&<)>v2&, <(>&<)>v3&, <(>&<)>v4&.

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?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.