n8n-validation-expert

Expert guide for interpreting and fixing n8n validation errors. Validate early, validate often Validation is typically iterative: Key insight : Validation is an iterative process, not one-shot! Blocks workflow execution - Must be resolved before activation Types : Example : Doesn't block execution - Workflow can be activated but may have issues Types : Example : Nice to have - Improvements that could enhance workflow Types : 7,841 occurrences of this pattern: This is normal! Don't be discouraged by multiple iterations. Choose the right profile for your stage: Use when : Quick checks during editing Validates : Pros : Fastest, most permissive Cons : May miss issues Use when : Pre-deployment validation Validates : Pros : Balanced, catches real errors Cons : Some edge cases missed This is the recommended profile for most use cases Use when : AI-generated configurations Validates : Pros : Less noisy for AI workflows Cons : May allow some questionable configs Use when : Production deployment, critical workflows Validates : Pros : Maximum safety Cons : Many warnings, some false positives What it means : A required field is not provided How to fix : Example : What it means : Value doesn't match allowed options How to fix : Example : What it means : Wrong data type for field How to fix : Example : What it means : Expression syntax error How to fix : Example : What it means : Referenced...