Has anyone mapped an inbound EDI 860 (Purchase Order Change) using SPS Commerce, B2B Gateway, or a custom solution? e.g. map an updated item quantity to a custom SO line item field, and have a saved search / alert for someone to review? My client says SPS only supports sending a non-NetSuite-based message, then the order must be reviewed in the SPS portal. I would think this is a solved problem in the NetSuite world, as it's a common EDI transaction.