Schedule lines from different customers

Hi Experts,

I have a scenario where we receive demand of 1000 qty each for X part from two different customers in sales scheduling agreement and send the purchase schedule lines to one vendor for that X part. Now MRP always aggregate the qty of different customer and update my purchase schedule agreement by 2000 qty.

Now this vendor is self packed vendor which means that they pack the part and we receive in same packing and directly sends to our customer. We never unpacked that at our end.

Now Vendor is asking to send the schedule line customer wise so that they can can pack also customer wise because right now he is not able to know which customer asked how much qty.

Please anybody is having any idea how to map this? Does it need any enhancement ?

Appreciate your help in this.