The Email should be an API user in the EasyEcom account, Please follow the UserRole article to understand how to create a user and assign a role. Password will be the EasyEcom password for the above user Email,
Location_key will be the seller token of the warehouse where the carrier partner is integrated.
Reverse Shipment Support
Shipfast-Outbound supports Reverse Shipment flow.
To enable Reverse Shipment for your account, please contact EasyEcom Support.
Once enabled, reverse shipments can be processed through the Shipfast-Outbound integration.