Going to try and re-post this to the right board!
Does anyone know what would make an inventory item require a primary vendor number at the sales order level? I'm getting a client ready to go live on Monday and suddenly sales order entry started throwing the super-helpful error ""is not on file"" any time I tried to add a line to a sales order. By trial and error, I determined that if I added a vendor to the product, I didn't get the error. What makes it extra special is that if I remove the vendor from the sales order line, I don't get the error again. Could this be something in my settings that is requiring a vendor number?