Select data from sap tables WLF1
Display SAP table details
WLF1TREE - Settlement Management Tree Data
WLF1_ERROR - Error Message Structure
WLF1_ERROR_OUTPUT - Structure for the Output of Error Messages via ALV
WLF1_ERR_LI - Error Message Structure, List Processor
WLF1_LIF_ER - Error Message Structure for Business Partner
WLF1_LIF_ER_KEY - Key for WLF1_LIF_ER
Return Table index