n8n errors / Other
Bad request, please check your parameters. Input tokens exceed the configured limits.
Cause
The OpenAI node's memory accumulates history across users sharing one session ID, growing a single context window beyond the API token ceiling.
Fix
Assign a unique session ID per user (e.g. {{ $json.userId }}) in the memory node. Lower the history limit to 10-15 entries. Replace in-memory storage with an external DB (e.g. Supabase) for per-session isolation. Add a summarisation step if the payload itself is large.
Part of the Automation Error Index — n8n errors: browse all.
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