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yaml_duplicate_key

A policy diagnostic from deedglass policy lint and the policy routes.

Severity: error

A key appears twice in the same mapping. Most YAML readers keep only one of the two values without telling you, so the file would mean something other than what it shows.

deedglass: policy/v1
name: refunds
defaults:
  decision: deny
  reason: No rule allows this action.
rules:
  - id: small-refunds
    match: { tool: stripe.create_refund }
    when: args.amount <= 5000
    when: args.amount <= 50000
    decision: allow
✕ policy.yaml:10:5 · yaml_duplicate_key
  Key "when" appears twice in this mapping (first on line 9).
  hint: Keep one of them; YAML would silently use only one.

Fix: keep one of the two lines. To combine both conditions, join them with && in a single when.

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