@Luis Are you using the Inbound Shipment module from NS? I’m guessing you’d want an EDI message from your 3PL To trigger the item receipt (or something like that) The thing is that the inbound shipment module receipt process isn’t exposed to external web processes. I spent… a really unfortunately amount of time learning about how terrible the NS inbound shipment module is. In other words, there is nothing external that could come in and trigger that receipt. Now if you weren’t using the inbound shipment module and just wanted that EDI to trigger a PO receipt? Totally fine. Once you encapsulate the PO in the inbound shipment, no bueno. What you’d have to do, if you stick with that module, is to create an intermediary custom record. Have the EDI message from your 3PL Create that intermediary record. Then have someone create a script that takes that newly created intermediary record and trigger the inbound shipment receipt.