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Versioning rules

Versioning rules​

PayWise APIs are versioned by date. Append ?version=YYYY-MM-DD to requests to lock to a specific contract.

  • The latest version is selected when you omit the query parameter.
  • Backward-compatible changes ship with a date bump and a release note.
  • Breaking changes roll out only when the new date (and migration hint) is published.

Use the version query string when you need deterministic behavior across deployments.