We are trying to design our standard 856 for customers that are not on EDI yet.
I've been researching where to put the carrier information.
Seems like some people recommend putting the tracking # here:
REF*CN*1Z6Y654R1359137591~
I've seen "CN" for Carrier Number, and I've seen other use "ZH".
Where would I put the fact that it's FedEx, USP, USPS, etc... Would that just be another reference with a different code? I'm trying to find how most people already do it. I've found several 856 implementation guides, but it's not clear where they put the carrier name especially.
As Artem has mentioned, the 5th element of the TD5 segment is the usual place for a carrier name.
As for a tracking number, I've not seen this in the TD5 segment before. You could use the REF segment with a qualifier of 2I which is the qualifier which specifically means "Tracking Number".