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SAP / SAP Beginner (0 to 2 yrs) Interview questions

What is a BAPI?

A BAPI (Business Application Programming Interface) is a special category of function module specifically designed as a stable, standardized, externally-callable interface for interacting with SAP business objects (like creating a customer, posting a sales order, or checking material stock) — intended for use both by other SAP programs and by external systems integrating with SAP.

CALL FUNCTION 'BAPI_SALESORDER_CREATEFROMDAT2'
  EXPORTING
    order_header_in = ls_header
  TABLES
    order_items_in  = lt_items
    return          = lt_return.

The key distinction from an ordinary function module is BAPIs' stability guarantee: SAP commits to keeping a BAPI's interface backward-compatible across releases, which makes them the recommended, safe integration point for external systems, rather than calling arbitrary internal function modules that SAP might change or remove without the same compatibility promise.

What is a BAPI specifically designed for?
What compatibility guarantee does SAP provide for BAPIs that ordinary function modules don't have?

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SAP Mid Level (3 to 8 yrs) Interview questions

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