Onerway
POST

Query fraud notifications

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Use this endpoint to retrieve fraud notifications and link each notification back to the original transaction through originTransactionId.

Request

merchantNostringrequired
Merchant number assigned by Onerway. See Setup for how to obtain it.
Example:replace_with_merchant_no
notificationIdstringoptional
Unique identifier of the fraud notification. Submit it to query one fraud notification precisely.
fraudTypestringoptional
Fraud type used to filter fraud notifications.
Example:Card Not Present Fraud
Allowed values
Lost
Lost card.
Lost Fraud
Fraud involving a lost card.
Stolen
Stolen card.
originTransactionIdstringoptional
Original Onerway transaction ID, transmitted as a JSON string and used to filter fraud notifications for one source transaction.
createTimeStartstringoptional
Start of the notification creation time range, in yyyy-MM-dd HH:mm:ss format.
Constraints
Rule
When querying only by time range, submit both createTimeStart and createTimeEnd. The maximum range is 90 days.
createTimeEndstringoptional
End of the notification creation time range, in yyyy-MM-dd HH:mm:ss format. It should be later than createTimeStart.
Constraints
Rule
When querying only by time range, submit both createTimeStart and createTimeEnd. The maximum range is 90 days.
currentstringrequired
Query page number. 0 and 1 both mean the first page. The response current value is always returned as a 1-based page number.
Example:1
signstringrequired
Request signature string. See Request signing for how to generate it.

Request example

curl -X POST 'https://sandbox-acq.onerway.com/fraud/list' \
  -H 'Content-Type: application/json' \
  --data-raw '{
  "createTimeEnd": "2026-06-21 23:59:59",
  "createTimeStart": "2026-06-01 00:00:00",
  "current": "1",
  "merchantNo": "replace_with_merchant_no",
  "sign": "{{SIGN}}"
}'

Response

respCodestring
20000 means the query request was processed successfully. Other values are error codes. See Response codes.
respMsgstring
Human-readable message for the response code.
Business data object containing fraud notifications and pagination information.

Response example

Example code is unavailable.

No error responses are documented for this endpoint.

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