SAP Function Module search on KL_SH
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KL_SH_SELECT_FORMID - Selects only formulas based on the determination procedure
KL_SH_SELECT_VAR1 - Beispiel für ein Suchhilfe-Exit eine Suchhilfe
KL_SH_SELECT_VAR2 - Selects NPVS and nominal amounts only
KL_SH_SELECT_VAR3_4 - Selects advance payment amoutn and return payment amount only
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