Can multiple tracking numbers be added to the same fulfillment or fulfillment order? The previous version allowed us to send an array of tracking numbers but the new endpoint only accepts a string. I’ve also checked to see if we could send a variety of tracking info objects but with no luck so far. I was thinking of using the updating_tracking endpoint but feel like that would overwrite the previous tracking info.
Having the same issue…
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I found other posts about this so I just want to update this in case anyone needs it; Add multiple tracking numbers to same line item and Adding multiple tracking numbers using New Fulfillment API . The REST Admin API version only allows one tracking number right now and the GraphQL version allows for multiple. One of the posts said that there are plans to make them available in the REST version but didn’t mention the timeline of when.