Programming Standardized BAPIs 
Programming Standardized BAPIs
Purpose
Some BAPIs and methods provide basic functions and can be used for most SAP business object types. These BAPIs are called "standardized" BAPIs.
Process Flow
If your BAPI is a standardized BAPI, you should implement it following the programming guidelines described in the following sections.
See also:
Programming GetList() BAPIs Programming GetDetail() BAPIs Programming GetStatus() BAPIs Programming ExistenceCheck() BAPIs Programming Create() BAPIs Programming Change() BAPIs Programming Delete() BAPIs Programming Cancel() BAPIs Programming Replicate()/SaveReplica() BAPIs Programming Methods for Sub-Objects