That part number appears to match up with a SATA based SSD used in a MBAir from 2013-2015. According to the OWC product page this Apple SSD should work in this Envoy Pro Enclosure linked here:
https://eshop.macsales.com/item/OWC/MAU3ENPRPCI/
From reading the OWC information on this product page and the product compatibility page linked within the product page the Apple SanDisk SSD should work (the articles only mention issues with Toshiba SSDs and certain Samsung models). If the SSD is not working in the enclosure, but the SSD works in the laptop, then perhaps your USB cable or the enclosure itself is bad (or possibly you have a bad USB port on your Mac). Are you connecting the enclosure directly to the Mac? Sometimes an adapter, dongle, or hub will cause problems with external USB drives.
The proprietary Apple PCIe SSDs can only be used in very specific Mac models or with an OWC Envoy Pro Enclosure. Keep in mind Apple has several different variations on this proprietary PCIe SSD so it would also require a very specific version of the OWC Envoy Pro Enclosure and very specific Macs. I believe most of the Apple PCIe SSDs from 2013 - 2017 work with one model of the OWC enclosure and an SSD from a 2011 - 2012 Apple laptop requires a different OWC enclosure that may no longer be available. I'm not aware of any other brand of enclosure which will work with these proprietary Apple PCIe SSDs.
Also the OWC Envoy Pro Enclosures only work with the Apple PCIe SATA based SSDs and not an NVMe based SSD. OWC includes a note in the enclosure stating if an NVMe based SSD is used with the OWC enclosure it will likely damage both the SSD and the enclosure. From what I can find I think your SSD is a SATA based SSD so this is probably not the problem.