Reverse Request

Last updated: 2026-03-25

POST

/in-store/api/v1/reverse

Reverse a transaction that has not yet settled

Request Body

terminalIdstringrequired

The ID of the terminal where the original transaction was processed.

HTTP Status Code Summary

Code	Description
201	Reversal request created and sent to terminal.
400	Bad request. Check that terminalId is provided and valid.
401	Unauthorized. Ensure your bearer token and subscription key are valid.
409	Conflict. A reversal for this terminal is already in progress.
422	Unprocessable entity. The transaction may have already settled — use Refund instead.

Request

cURL

1curl -X 'POST' \
2  'https://demo-api.westpay.se/in-store/api/v1/reverse' \
3  -H 'accept: application/json' \
4  -H 'Ocp-Apim-Subscription-Key: <merchant-subscription-key>' \
5  -H 'Authorization: Bearer <access-token>' \
6  -H 'Content-Type: application/json' \
7  -d '{
8  "terminalId": "<your-terminal-id>"
9}'

Response

1{
2  "onlineAPIRefId": "23179040000954"
3}