Message SAP /SAPBOQ/SRVPACK033 - Record &1, SERVICES: assign a valid main item (MI_LINE_NO)

Diagnosis The data record &V1& is a subitem (object category U). The value for MI_LINE_NO is invalid. The assigned service line does notexist. Procedure For data record &V1&, enter a valid value for MI_LINE_NO in theparameter SERVICES. Check whether the object category of the serviceline to be assigned is M for a main item.