regarding MB_migo_badi implementation

Hello Experts,

I have implemented MB_MIGO_BADI for custom field at detail data. Custom field is added successfully but the data in this field should come from PO custom field. Can anyone tell me where temparory data like PO doc no. and PO item no. is saved before posting MIGO. Is there any structure or table?

From where i can fetch data of ekpo in this badi MB_migo_badi?

Please Guide me.

Regards,

Shubhada.