BAPI_SALESORDER_CHANGE (BAPI1) and SD_SALESDOCUMENT_CHANGE (BAPI2) extension methods are the same. BAPI1 internally calls BAPI2
Standard table and structure extension: (many explanations on the Internet, not to repeat)
Different tables or structures need to be expanded according to the location of customized fields:
Update headers: VBAK, BAPE_VBAK, BAPE_VBAKX, VBAKKOZ and VBAKKOZX.
Update line items: VBAP, BAPE_VBAP, BAPE_VBAPX, VBAPKOZ and VBAPKOZX.
Enhancement point: ES_BADI_SD_SALES_BAPI
Method：MOVE_EXTENSIONIN
BAPI: BAPI_SALESORDER_CHANGE must pass in parameters
salesdocument、order_header_inx
order_item_in、order_item_inx、extensionin
