n8n-validation-expert
Expert guide for interpreting and fixing n8n validation errors.
- Covers three severity levels: errors (block execution), warnings (optional fixes), and suggestions (nice-to-have improvements)
- Includes five common error types with fix strategies: missing_required, invalid_value, type_mismatch, invalid_expression, and invalid_reference
- Provides three validation profiles (minimal, runtime, strict, ai-friendly) for different workflow stages, with runtime recommended for pre-deployment checks
- Auto-sanitization system automatically fixes operator structure issues on workflow saves, handling binary/unary operators and IF/Switch metadata
- Explains the iterative validation loop (typically 2–3 cycles) and strategies for reducing false positives in production workflows
n8n Validation Expert
Expert guide for interpreting and fixing n8n validation errors.
Validation Philosophy
Validate early, validate often
Validation is typically iterative:
- Expect validation feedback loops
- Usually 2-3 validate → fix cycles
- Average: 23s thinking about errors, 58s fixing them
Key insight: Validation is an iterative process, not one-shot!
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