Change in comp. overview & op. overview of prod. order

hello all,

when the production order is created for a material,

components overview gets updated according to values in bom.

till here:ok.

i am looking for a bapi.. which can change in specific conponent in the bom.

not material bom, instead i want a slight change in the qty of a specific component.

(that slight changes in not fixed that can be customized ,

but user will enter in excel sheet qty of that specific component).

i am using bapi , to create prod order.

CALL FUNCTION 'BAPI_PRODORD_CREATE'     EXPORTING       ORDERDATA    = t_BAPI_PP_ORDER_CREATE     IMPORTING       RETURN       = t_BAPIRET2       ORDER_NUMBER = t_ORDER_NUMBER       ORDER_TYPE   = t_ORDER_TYPE.

so, it is useless till i am able to change in that specific component's qty.

also,

i want another bapi(if one bapi does all this then i wont mind), to change in operations

overview.

please suggest also if there exists some another way to update both of these.

as of now,prod order is created through bapi, but user has to change component qty

and in operation overview for each prod order.

i am enclosing the screenshot of the changes that user does manually,

i want to process these changes through program.

components overview:

Operation overview:

i want to change the work center for highlighted material.