If you use GoDataFeed API for Order Sync, then you can send a specific carrier value for orders that overrides the default carrier in the source settings. To do this, simply provide DestinationShippingCarrier.

This is the carrier value as defined in the Update Order Status request set by the seller or their system. If source settings option "Use Destination Carrier" is enabled, then this field overrides the default carrier from the source settings shipping methods mappings in the GoDatafeed app.

Values for DestinationShippingCarrier must be an accepted value from the order source otherwise the update will be rejected by the marketplace.

The following is from Amazon MWS reference: base.xsd

Accepted Carrier values from Amazon

• USPS
• UPS
• UPSMI
• FedEx
• DHL
• Fastway
• GLS
• GO!
• Hermes Logistik Gruppe
• Royal Mail
• Parcelforce
• City Link
• TNT
• Target
• SagawaExpress
• NipponExpress
• YamatoTransport
• DHL Global Mail
• UPS Mail Innovations
• FedEx SmartPost
• OSM
• OnTrac
• Streamlite
• Newgistics
• Canada Post
• Blue Package
• Chronopost
• Deutsche Post
• DPD
• La Poste
• Parcelnet
• Poste Italiane
• SDA
• Smartmail
• FEDEX_JP
• JP_EXPRESS
• NITTSU
• SAGAWA
• YAMATO
• BlueDart
• AFL/Fedex
• Aramex
• India Post
• Professional
• DTDC
• Overnite Express
• First Flight
• Delhivery
• Lasership
• Yodel
• Other
• Amazon Shipping
• Seur
• Correos
• MRW
• Endopack
• Chrono Express
• Nacex
• Otro
• Correios
• Toll Global Express
• China Post
• AUSSIE_POST
• EUB
• Australia Post
• Yun Express
• Fastway
• 4PX
• YANWEN
• SF Express
• BRT
• AustraliaPost-Consignment
• AustraliaPost-ArticleId
• Sendle
• CouriersPlease
• A-1
• AAA Cooper
• ABF
• ALLJOY
• Aras Kargo
• Arkas
• Arrow XL
• Asendia
• Asgard
• Assett
• AT POST
• ATS
• Balnak
• Beijing Quanfeng Express
• Best Buy
• Best Express
• BJS
• BoÄŸaziçi
• Bombax
• Cart2India
• CDC
• CELERITAS
• CEVA
• Ceva Lojistik
• Cititrans
• Coliposte
• Colissimo
• Conway
• Correos Express
• Couriers Please
• CTTExpress
• DB Schenker
• DHL eCommerce
• DHL Express
• DHL Freight
• DHL Home Delivery
• DHL Kargo
• DHL-Paket
• DHLPL
• Digital Delivery
• DirectLog
• Dotzot
• DSV
• DX Freight
• ECMS
• Ecom Express
• Emirates Post
• Energo
• Envialia
• Estafeta
• Estes
• Fedex Freight
• Fillo Kargo
• First Flight China
• First Mile
• Gati
• GEL Express
• geodis
• Geodis Calberson
• Geopost Kargo
• Hermes Einrichtungsservice
• Home Logistics
• Hongkong Post
• Horoz Lojistik
• HS code
• Hunter Logistics
• ICC Worldwide
• IDS Netzwerk
• InPost
• iParcel
• Japan Post
• JCEX
• Kargokar
• Kuehne+Nagel
• Landmark
• Metro Kargo
• MNG Kargo
• Narpost Kargo
• Nexive
• Ninjavan
• Old Dominion
• OneWorldExpress
• Panther
• Pilot
• Pilot Freight
• Polish Post
• Post NL
• PostNord
• PTT Kargo
• PUROLATOR
• QExpress
• Qxpress
• R+L
• Raben Group
• Rhenus
• Rieck
• Rivigo
• Roadrunner
• Safexpress
• Saia
• Seino
• SEINO TRANSPORTATION
• Selem Kargo
• Self Delivery
• SENDLE
• SFC
• Ship Delight
• Ship Global US
• ShipEconomy
• ShipGlobal
• Shree Maruti Courier
• Shree Tirupati Courier
• Shunfeng Express
• Singapore Post
• South Eastern Freight Lines
• Speedex
• Spoton
• StarTrack-ArticleID
• StarTrack-Consignment
• STO Express
• Sürat Kargo
• Tezel Lojistik
• The Professional Couriers
• TIPSA
• TNT Kargo
• TNTIT
• Total Express
• Trackon
• TransFolha
• Tuffnells
• UPS Freight
• Urban Express
• VIR
• VNLIN
• WanbExpress
• Watkins and Shepard
• Whizzard
• WINIT
• XDP
• XPO Freight
• Xpressbees
• YDH
• Yellow Freight
• YTO Express
• Yunda Express
• Yurtiçi Kargo
• ZTO Express
• Tourline