During goods receipt for several purchase orders with, for example, different vendors, the header data of Transaction MIGO does not change after you have entered the 2nd purchase order. The system still displays the vendor of the first item.
The system shows this behavior for all fields of the header area which are actually order item data.
This function corresponds to the design of Transaction MIGO
The item data which is displayed in the header area for example, the vendor refers always to the first item.
It is displayed in the header area to make the work easier for the person who entered the data since this data is often identical for all items and a check of the header area is quicker. If you work with different 'header data' per item you must check the data on the detail of the individual items.