# Backend Workflow - Missing parameter

**URL:** <https://forum.bubble.io/t/backend-workflow-missing-parameter/136423>\
**Category:** APIs\
**Created:** [February 16, 2021, 12:10pm UTC](https://forum.bubble.io/t/backend-workflow-missing-parameter/136423 "2021-02-16T12:10:07Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Berlingo](https://avatars.discourse-cdn.com/v4/letter/b/9de0a6/32.png) [@Berlingo](https://forum.bubble.io/u/Berlingo)\
**Post date:** [February 16, 2021, 12:10pm UTC](https://forum.bubble.io/t/backend-workflow-missing-parameter/136423/1 "2021-02-16T12:10:07Z")

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Hello! I try to set up a backend workflow, but when I call the Endpoint I get an error “Missing parameter for workflow”. I don’t understand the error as I have obviously included the parameter…

Any idea on how to solve this issue would be greatly appreciated.

Those are my settings:

 ![image](https://us1.discourse-cdn.com/bubble/original/3X/d/d/dd273ffb96e80d811b2199b3a250fc283965ed75.png)

This is the error I get in Postman:

 ![image](https://us1.discourse-cdn.com/bubble/original/3X/6/5/654c8aecb79169569853c60b637aed388542d4a1.png)

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<div class="post-metadata">

**Author:** ![nocodeventure](https://sea1.discourse-cdn.com/bubble/user_avatar/forum.bubble.io/nocodeventure/32/247164_2.png) [@nocodeventure](https://forum.bubble.io/u/nocodeventure)\
**Post date:** [February 16, 2021, 12:17pm UTC](https://forum.bubble.io/t/backend-workflow-missing-parameter/136423/2 "2021-02-16T12:17:47Z")

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I think it’s because you’re passing a querystring, try hitting the checkbox.

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<div class="post-metadata">

**Author:** ![Berlingo](https://avatars.discourse-cdn.com/v4/letter/b/9de0a6/32.png) [@Berlingo](https://forum.bubble.io/u/Berlingo)\
**Post date:** [February 16, 2021, 1:26pm UTC](https://forum.bubble.io/t/backend-workflow-missing-parameter/136423/3 "2021-02-16T13:26:00Z")

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Oh, now I get it! Thanks a lot!