# OpenAI Playground Message with ID (#) not found

**URL:** <https://community.openai.com/t/openai-playground-message-with-id-not-found/1269701>\
**Category:** API\
**Tags:** playground\
**Created:** [May 26, 2025, 9:33pm UTC](https://community.openai.com/t/openai-playground-message-with-id-not-found/1269701 "2025-05-26T21:33:06Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Allison\_Yu](https://sea2.discourse-cdn.com/openai1/user_avatar/community.openai.com/allison_yu/32/511791_2.png) [@Allison\_Yu](https://community.openai.com/u/Allison_Yu)\
**Post date:** [May 26, 2025, 9:33pm UTC](https://community.openai.com/t/openai-playground-message-with-id-not-found/1269701/1 "2025-05-26T21:33:06Z")

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New user here. I’m trying to test prompts in the playground, I’ve inputted a system prompt and user input, but the assistant output consistently displays message with ID not found. Any idea why this might be happening? Thanks!

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**Author:** ![darrenc](https://avatars.discourse-cdn.com/v4/letter/d/74df32/32.png) [@darrenc](https://community.openai.com/u/darrenc)\
**Post date:** [August 11, 2025, 7:00am UTC](https://community.openai.com/t/openai-playground-message-with-id-not-found/1269701/3 "2025-08-11T07:00:22Z")

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Hi @Allison_Yu ,  
I having the same issue -did you find a solution?  
I’ve created a simple promt with no variables, the id is correct, it’s in my organisation space not my personal space and I still get the error response:  
{

```
"error": {

```

“message”: “Prompt with id ‘pmpt\_123…’ not found.”,  
“type”: “invalid\_request\_error”,  
“param”: null,  
“code”: null  
}  
}

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<div class="post-metadata">

**Author:** ![tansaku](https://sea2.discourse-cdn.com/openai1/user_avatar/community.openai.com/tansaku/32/58488_2.png) [@tansaku](https://community.openai.com/u/tansaku)\
**Post date:** [August 14, 2025, 4:15am UTC](https://community.openai.com/t/openai-playground-message-with-id-not-found/1269701/4 "2025-08-14T04:15:01Z")

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I was encountering this error, but realised that I had my prompt in a different project from the one that I had associated with the key I was using locally. By re-creating the prompt in the correct project I fixed the issue.

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<div class="post-metadata">

**Author:** ![darrenc](https://avatars.discourse-cdn.com/v4/letter/d/74df32/32.png) [@darrenc](https://community.openai.com/u/darrenc)\
**Post date:** [August 15, 2025, 4:28am UTC](https://community.openai.com/t/openai-playground-message-with-id-not-found/1269701/5 "2025-08-15T04:28:46Z")

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thanks @tansaku , i took another look and found the issue -I had an old API key in my local env var so i was actually looking in the wrong project.

Cheers,  
Darren.