# Request exception **URL:** \ **Category:** Fulfillment & Inventory\ **Tags:** fulfillment-services\ **Created:** [June 25, 2025, 6:56am UTC](https://community.shopify.dev/t/request-exception/17915 "2025-06-25T06:56:02Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![buy\_kungfu](https://sea1.discourse-cdn.com/shopifycommunity/user_avatar/community.shopify.dev/buy_kungfu/32/1817_2.png) [@buy\_kungfu](https://community.shopify.dev/u/buy_kungfu)\ **Post date:** [June 25, 2025, 6:56am UTC](https://community.shopify.dev/t/request-exception/17915/1 "2025-06-25T06:56:03Z")
request fulfillmentOrderSubmitFulfillmentRequest response The fulfillment order’s assigned fulfillment service must be of api type , What is the reason and how to solve it ---
**Author:** ![JordanFinners](https://sea1.discourse-cdn.com/shopifycommunity/user_avatar/community.shopify.dev/jordanfinners/32/6616_2.png) [@JordanFinners](https://community.shopify.dev/u/JordanFinners)\ **Post date:** [June 25, 2025, 7:43am UTC](https://community.shopify.dev/t/request-exception/17915/2 "2025-06-25T07:43:30Z")
You’ll need to understand fulfillment services on Shopify and how they work with fulfilling an order and if thats the right choice for your app. Theres some really good docs on this here [About fulfillment services](https://shopify.dev/docs/apps/build/orders-fulfillment/fulfillment-service-apps) ---
**Author:** ![buy\_kungfu](https://sea1.discourse-cdn.com/shopifycommunity/user_avatar/community.shopify.dev/buy_kungfu/32/1817_2.png) [@buy\_kungfu](https://community.shopify.dev/u/buy_kungfu)\ **Post date:** [June 25, 2025, 9:22am UTC](https://community.shopify.dev/t/request-exception/17915/3 "2025-06-25T09:22:51Z")
Thank you for your reply. I have seen the lifecycle of fulfilling orders, but I encountered an issue at the merchant’s step. I am unable to see the Request fulfillment button on the store’s order details page to initiate fulfillment. Do you have any excellent documentation to share about this button