type: https://developers.tassyir.io/errors/app-data-key-not-declared.
What to do
HTTP 400. Your installation’s version does not declare that key for that owner type. Declare it under[[data.definitions]], upload, and have the merchant
accept the update.
Answered by
HTTP 400, from: The shape of every problem, and how@tassyir/app reports it: Errors.