SAP Message 5D635 - No health insurance fund category is assigned to HI fund &1

Diagnosis You have entered SI attribute 23 (SI-contribution). This work center isliable to pay contributions. To determine the contribution fund and itspercentages, you need to enter the HI fund category. However, this isnot assigned to the HI fund. Procedure Maintain the HI fund category for the HI fund in the view V_5D11_C.