Solution : https://service.sap.com/sap/support/notes/32914 (SAP Service marketplace login required)
Key words :
additional key words enhancement concept, statement call customer-function, function group xnnn, respective function module, symptom function exit, inactive function modules, active function modules, function modules, customer site, function module
Related Notes :
179615 | Enhancements (user exits) for balance sheet valuation |