Hello Sanjeev,
You can use BAPI_BUPA_BANKDETAIL_CHANGE BAPI.
CALL FUNCTION 'BAPI_BUPA_BANKDETAIL_CHANGE' "SAP BP, BAPI: Change Bank Details
EXPORTING
businesspartner = " bapibus1006_head-bpartner Business Partner Number
bankdetailid = " but0bk-bkvid Bank Details ID
bankdetaildata = " bapibus1006_bankdetail Bank Details
* bankdetaildata_x = " bapibus1006_bankdetail_x Change Information on BANKDETAILDATA
* TABLES
* return = " bapiret2 Messages
. "