get https://marketplace.walmartapis.com/v3/shipping/labels/carriers//trackings/
Download label by carrier and trackingNoThe response to a successful call contains the tracking number with the pdf or image or zpl type based on the media type passed in Accept header.
For eg. 'Accept'='application/json,application/pdf' will result in pdf media type,
'Accept'='application/json,image/png' as image media type as Accept'='application/json as json response,
'Accept'='application/json,application/zpl' will result in zpl media type.