Select data from sap tables TDBI
Display SAP table details
TDBILL_CATEG - Invoice categories
TDBILL_CATEGT - Description of Billing Categories
TDBILL_FORMAT - Bill Format (Paper Bill / Paperless Bill)
TDBILL_FORMATT - Description of Bill Format (with Print / without Print)
TDBILL_PAR - Settings for Billing
Return Table index