SAP Function Module search on ISB_
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ISBF_CHECK_ERROR_SEVERE - Check for E or A message in return table
ISBF_CHECK_SOLUTION - SDB: Existance check for Solution number
ISBF_GET_SOLUTION - Reading and outputting Solution
ISB_FCC_GET -
ISB_FIELD_CHOICE_CONTROL_SHOW2 - Display of Required/Optional Control
Return Table index