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API call for Fulfillment Order Cancellation request

5 0 1

I am required to send the cancellation request to Shipwire. As per the documentation I am using Fulfillment order cancellation_request API method. I am getting this response. 

What is required to make it work.

"errors": [
"The fulfillment service has not registered for fulfillment order based fulfillments."

Reply 1 (1)
Shopify Partner
15 2 1

Set a callback_url and the fulfillment_orders_opt_in flag to true on the FulfillmentService. Good luck.