Add Merchant Data
You can append metadata to existing transaction's mercant_data container (overwrites existing value atm).
Returns updated transaction object.
<?php
$transaction_id = '0368156c-...-282f7eada86a';
$request_body = array('merchant_data' => 'my new metadata');
$transaction = $MK->addTransactionMeta($transaction_id, $request_body);
?>
Before you can try the request below here - please set context variables for your session:
Set Shop context
Required fields are underlined.