Leave regulation not found (&1)

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

How to fix this error?

Procedure for System Administrators

In the view V_T5DB_ZUORDUREG "Assignments for Leave Regulations for IT
2006", enhance the missing entries.

Error message extract from SAP system. Copyright SAP SE.