Select data from sap tables NKSK
Display SAP table details
NKSK - IS-H: Insurance verification/certificate - Header data
NKSKSELH - IV/TC-Selection - Header
NKSKSELI - IV/TC-Selection - Item
NKSK_FIELDS - IS-H: Header Data Fields for Treatment Certificates
NKSK_FIELDS_X - IS-H: Change Structure for NKSK fields
Return Table index