https://developer.shiphero.com/webhooks#generate-label-webhook
When the webhook response replies with a single label URL pointing to a .png file, it works normally. When the webhook response replies with multiple label URL pointing to .png files, ShipHero replies with printing error.
Does the multiple package webhook response only accept .pdf label url?
Api response error from https://hook.us1.make.com/wkfm4n59ybwkvqfw5oyxkxvaadvv5mdf: { "code": "200", "packages":[{ "name": "Package 1", "shipping_method": "FEDEX_GROUND", "tracking_number": "794699818524", "cost": "0.00000", "label": "https://easypost-files.s3.us-west-2.amazonaws.com/files/postage_label/20240131/e8cc95d2d209804464938fa4e570e0adc2.png", "customs_info": "", "shipping_carrier": "FedEx", "tracking_url": "https://www.fedex.com/fedextrack/?trknbr=794699818524" } ,{ "name": "Package 2", "shipping_method": "FEDEX_GROUND", "tracking_number": "794699818546", "cost": "0.00000", "label": "https://easypost-files.s3.us-west-2.amazonaws.com/files/postage_label/20240131/e89438f6fad7e64420b4152c630643243e.png", "customs_info": "", "shipping_carrier": "FedEx", "tracking_url": "https://www.fedex.com/fedextrack/?trknbr=794699818546" } ] }
Edit: it appears that .pdf files in 8.5"x11" also fail to print. Does ShipHero only accept 4"x6" labels?