Hi, we have just started using intercompany procurement. Due to the way our logistics teams works we can have cases where one PO relates to between 2 and 5 POs from the child subsidiary. On the forms we can only link to one child PO. Is it possible to configure ( even with customisation ) a one to many relationship for intercompany POs.

Man I don't think so. That process is locked down really tight compared to a lot of other flows in NetSuite. It's not a good option, but may have to play with Interco Transfers orders and JEs for the revenue/COGS? Or just add -1, -2, -3 at the end of your doc numbers or something. I can't think of any good options for that unfortunately.