Required Fields to Request a Check Transaction Status {#ttp-sis-pymnt-svcs-cloud-txn-status-api-reqfields}
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serialNumber
:
Set the value to the serial number of the device.

request.type
:
Set the value to `TransactionLookupRequest`.

request.idType
:
Set the value to `TRANSACTION_ID` or `MERCHANT_REFERENCE_CODE`.

request.id
:
Set the value to the `id` or `merchantReferenceCode` field value from the original transaction.