URL DE PAGO: http://dev-payment-backend-core.azurewebsites.net/?x_account_id=62224230&x_amount=15000&x_currency=CLP&x_reference=TEST1788320814&x_result=failed&x_timestamp=2026-09-01T23:46:55Z&x_message=Error%20validacion&x_signature=80d13d7435e2b03adf8ea9c3b43957dbc7c196e8f98ab059ed9a708dc59f2c14

RESULTADO: FALLIDO - Error validacion