SAP Message 5Q334 - No entry exists for constant &1 in period &2 to &3

Diagnosis
The Customizing settings are checked before the Check ChildAllowance Data report is executed. The following errors have beenfound:
The constant has not been maintained correctly. At least one recordmust exist for the constant at each event.

System Response
The system cannot calculate the child allowance amount and it cannotcheck the existing amounts.

What_to_do check the entries okkg0 orOKKG1 - OKKG4. If necessary, see thedocumentation on the Implementation Guide.