to find perticular user exit for mb1b

Hi all,

Actually my requirement is

The purpose of this enhancement is to detach the stock from source sales order item and attach the same stock to the target sales order item and simultaneously short closing the Sales Order item to the tune of transfer posting quantity.

Means after attaching source saled order item qty then one bdc has to run.That bdc is to remove attached qty from source sales order.

suppose source SO 1000234 item 10 qty 50

target SO 1000987 item 10 qty 15

Adding qty of 30 from source SO of perticular item.

After completion of this.

Then to run bdc to remove qty 30 from source SO.

Then in source it should become balance as 20. like that.

If any knows perticular User exit then please guide me.

Regards,

Lokesh.