Rutter allows updating specific orders with shipping/fulfillment information like carrier, tracking number, and tracking URL.
Carrier company, ex "USPS", "Fedex", "UPS", "Canada Post", etc. Can be any string
Carrier shipping service, e.g. "Priority Mail", "2 Day deliivery", etc. Can be any strinig
The product variants and quantities associated as part of this fulfillment