OpenAI Chat Model1 <uuid>.role column doesn't exists

Questions
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1

Over the last week, I’m consistently this error from my Agent node attached to an OpenAI model.

Error in sub-node ‘OpenAI Chat Model1‘ column 9827483463398fbb7d6b96916fe451d8bdefa0e8.role does not exist

The only solution I’ve found is to delete the open ai component and add a new one, but that only seems to work temporarily. It will execute fine in the workflow building, but then bricks when I trigger the workflow normally. Only started noticing this after updating from the 4.1 to 5 models, but I’m not sure if that’s just a coincidence. The prompt hasn’t materially change on the user / system side.

2

I’d suggest:

  • Clear and recreate the OpenAI node after updating to v5.

  • Double-check if you’re using the new ‘Chat Model’ node (v5 structure is stricter).

  • Make sure system, assistant, and user roles are defined properly in your prompt input.

  • If it persists, export and re-import the workflow so the node JSON refreshes.

3

Besides having separate user and system prompts, which I think covers off the system and user roles, is there anything else required for v5? I’m not familiar with passing the assistant role.

What I find strange is I swap out the OpenAI Chat Model node with a new one, test the workflow out, and experience no issues. But when the workflow runs independently, the error surfaces. What’s changed?

4

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