Cancellations - PHP - Mercado Pago Developers
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Create cancellation

It is possible to cancel a specific purchase from the payment ID using the SDK below. For details on request parameters, check the Cancellation API.

          
<?php
  $client = new PaymentClient();
  $request_options = new RequestOptions();
  $request_options->setCustomHeaders(["X-Idempotency-Key: <SOME_UNIQUE_VALUE>"]);

  $client->cancel('123456789', $request_options);
?>