The event cannot depend on the shift

What causes this issue?

An event can only be limited to the current shift or a number of shifts
before the current shift if a shift model has been defined in the
system.

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?

Check whether you have <DS><DS:SIMG.COCF_SN_OP4A>defined shifts</></>.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.