Introduction
Customers often have to change the standard SAP objects in order to meet their own special requirements. They might want too add few extra fields to the standard SAP development. Which is necessary from their specific business process point of view. This fields might get updated in underlying Standard SAP tables or customer database table to ultimately serve the business purpose .
But this change might affect the further BAPI implementations. This is because BAPIs are designed to implement SAP standard business processes through a predefined standard interface. i.e. It's import and export parameters for any BAPI are fixed. So addition of new customer fields has absolutely nothing to do with this predefined BAPI interface. This because these fields are added to SAP database tables through some other Enhancements and not directly through respective BAPI.