fulfillment_orders.json returning empty response

Retired Boards Appdev Fulfillment Api
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Topic summary

A developer is experiencing intermittent empty responses when calling the Shopify fulfillment_orders.json API endpoint. The API sometimes returns blank data initially but provides the expected response when re-invoked after a few minutes.

Technical Details:

  • Endpoint: /admin/api/2023-04/orders/<orderId>/fulfillment_orders.json
  • API version: 2023-04
  • All required scopes appear to be properly configured, including read_fulfillments, write_fulfillments, read_orders, write_orders, and various fulfillment-related permissions

Current Status:

  • The issue is inconsistent and timing-dependent
  • No resolution has been identified yet
  • The developer is seeking guidance on what might be causing this intermittent behavior

This appears to be a troubleshooting request for an unexplained API reliability issue rather than a permissions or configuration problem.

Summarized with AI on November 11. AI used: claude-sonnet-4-5-20250929.
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In response to fulfillment_orders.json , I am getting blank response. On re-invocation of API after few min, the api is giving response body. Checked all the scopes as per the documentations, they seems to be in place. Not sure why this keeps happening. Any pointers to this will be helpful.

API EndPoint:
https://.myshopify.com/admin/api/2023-04/orders//fulfillment_orders.json

Scopes on Store:
{“access_scopes”:[{“handle”:“write_assigned_fulfillment_orders”},{“handle”:“read_assigned_fulfillment_orders”},{“handle”:“read_customer_events”},{“handle”:“write_customers”},{“handle”:“read_customers”},{“handle”:“write_draft_orders”},{“handle”:“read_draft_orders”},{“handle”:“write_files”},{“handle”:“read_files”},{“handle”:“write_fulfillments”},{“handle”:“read_fulfillments”},{“handle”:“read_gdpr_data_request”},{“handle”:“write_inventory”},{“handle”:“read_inventory”},{“handle”:“write_legal_policies”},{“handle”:“read_legal_policies”},{“handle”:“write_locations”},{“handle”:“read_locations”},{“handle”:“write_merchant_managed_fulfillment_orders”},{“handle”:“read_merchant_managed_fulfillment_orders”},{“handle”:“write_order_edits”},{“handle”:“read_order_edits”},{“handle”:“write_orders”},{“handle”:“read_orders”},{“handle”:“write_packing_slip_templates”},{“handle”:“read_packing_slip_templates”},{“handle”:“write_payment_customizations”},{“handle”:“read_payment_customizations”},{“handle”:“write_payment_terms”},{“handle”:“read_payment_terms”},{“handle”:“write_pixels”},{“handle”:“read_pixels”},{“handle”:“write_product_feeds”},{“handle”:“read_product_feeds”},{“handle”:“write_product_listings”},{“handle”:“read_product_listings”},{“handle”:“write_products”},{“handle”:“read_products”},{“handle”:“write_publications”},{“handle”:“read_publications”},{“handle”:“write_purchase_options”},{“handle”:“read_purchase_options”},{“handle”:“write_resource_feedbacks”},{“handle”:“read_resource_feedbacks”},{“handle”:“write_returns”},{“handle”:“read_returns”},{“handle”:“write_channels”},{“handle”:“read_channels”},{“handle”:“write_script_tags”},{“handle”:“read_script_tags”},{“handle”:“write_shipping”},{“handle”:“read_shipping”},{“handle”:“write_locales”},{“handle”:“read_locales”},{“handle”:“write_third_party_fulfillment_orders”},{“handle”:“read_third_party_fulfillment_orders”},{“handle”:“write_translations”},{“handle”:“read_translations”},{“handle”:“write_custom_fulfillment_services”},{“handle”:“read_custom_fulfillment_services”},{“handle”:“write_customer_merge”},{“handle”:“read_customer_merge”},{“handle”:“write_delivery_customizations”},{“handle”:“read_delivery_customizations”},{“handle”:“write_fulfillment_constraint_rules”},{“handle”:“read_fulfillment_constraint_rules”},{“handle”:“write_gates”},{“handle”:“read_gates”},{“handle”:“read_all_orders”}]}