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Agent multi step function_calling Error， use gpt-4o model #15231

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opened 2026-02-21 19:20:47 -05:00 by yindo · 1 comment
yindo commented 2026-02-21 19:20:47 -05:00
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Originally created by @zh-en520 on GitHub (Jul 9, 2025).

Self Checks

  • This is only for bug report, if you would like to ask a question, please head to Discussions.
  • I have searched for existing issues search for existing issues, including closed ones.
  • I confirm that I am using English to submit this report (我已阅读并同意 Language Policy).
  • [FOR CHINESE USERS] 请务必使用英文提交 Issue，否则会被关闭。谢谢！:)
  • Please do not modify this template :) and fill in all the required fields.

Dify version

1.1.3

Cloud or Self Hosted

Self Hosted (Docker)

Steps to reproduce

Image [openai_api_compatible] Error: PluginInvokeError: {"args":{"description":"[models] Error: API request failed with status code 400: {\"error\":{\"message\":\"litellm.BadRequestError: AzureException - 'function' is not an allowed role. The allowed roles are ['developer', 'system', 'user', 'assistant', 'tool'].. Received Model Group=gpt-4o\\nAvailable Model Group Fallbacks=None\",\"type\":null,\"param\":null,\"code\":\"400\"}}"},"error_type":"InvokeError","message":"[models] Error: API request failed with status code 400: {\"error\":{\"message\":\"litellm.BadRequestError: AzureException - 'function' is not an allowed role. The allowed roles are ['developer', 'system', 'user', 'assistant', 'tool'].. Received Model Group=gpt-4o\\nAvailable Model Group Fallbacks=None\",\"type\":null,\"param\":nu

✔️ Expected Behavior

I hope to solve the problem of multi-step function calling for AI agents. For example, a process where first the text in an image is recognized, and then knowledge base retrieval is performed based on that text from the image.

❌ Actual Behavior

No response

Originally created by @zh-en520 on GitHub (Jul 9, 2025). ### Self Checks - [x] This is only for bug report, if you would like to ask a question, please head to [Discussions](https://github.com/langgenius/dify/discussions/categories/general). - [x] I have searched for existing issues [search for existing issues](https://github.com/langgenius/dify/issues), including closed ones. - [x] I confirm that I am using English to submit this report (我已阅读并同意 [Language Policy](https://github.com/langgenius/dify/issues/1542)). - [x] [FOR CHINESE USERS] 请务必使用英文提交 Issue，否则会被关闭。谢谢！:) - [x] Please do not modify this template :) and fill in all the required fields. ### Dify version 1.1.3 ### Cloud or Self Hosted Self Hosted (Docker) ### Steps to reproduce <img width="2549" height="1060" alt="Image" src="https://github.com/user-attachments/assets/3c881a20-3a68-4ef7-bd72-f3caef3ecccb" /> [openai_api_compatible] Error: PluginInvokeError: {"args":{"description":"[models] Error: API request failed with status code 400: {\"error\":{\"message\":\"litellm.BadRequestError: AzureException - 'function' is not an allowed role. The allowed roles are ['developer', 'system', 'user', 'assistant', 'tool'].. Received Model Group=gpt-4o\\nAvailable Model Group Fallbacks=None\",\"type\":null,\"param\":null,\"code\":\"400\"}}"},"error_type":"InvokeError","message":"[models] Error: API request failed with status code 400: {\"error\":{\"message\":\"litellm.BadRequestError: AzureException - 'function' is not an allowed role. The allowed roles are ['developer', 'system', 'user', 'assistant', 'tool'].. Received Model Group=gpt-4o\\nAvailable Model Group Fallbacks=None\",\"type\":null,\"param\":nu ### ✔️ Expected Behavior I hope to solve the problem of multi-step function calling for AI agents. For example, a process where first the text in an image is recognized, and then knowledge base retrieval is performed based on that text from the image. ### ❌ Actual Behavior _No response_
yindo added the 🤖 feat:agent🔨 feat:tools labels 2026-02-21 19:20:47 -05:00
yindo closed this issue 2026-02-21 19:20:47 -05:00
yindo commented 2026-02-21 19:20:47 -05:00
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@crazywoola commented on GitHub (Jul 9, 2025):

Please upgrade dify and plugin to latest version.

@crazywoola commented on GitHub (Jul 9, 2025): Please upgrade dify and plugin to latest version.
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Reference: langgenius/dify#15231
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