API integration
This type of integration can be used to perform a Void transaction.
Interaction format:
Peculiarities of using this integration to perform void for the pre-authorization operation:
- A request to the Tranzzo API for void operation can be applied only to primary pre-authorization transactions (auth) with the successful status (success).
- Use the HTTP POSTmethod.
To initiate a void operation, a request to the Tranzzo API must contain the following parameters:
| Parameter | Type | Required | Description | 
|---|---|---|---|
| pos_id | UUID | ✅ | Merchant's identifier ( POS_ID) | 
| order_id | String | ✅ | Merchant's order identifier to be captured (max length is 32 characters) | 
| order_currency | CURRENCY | ✅ | Currency of original order | 
| comment | String | Void comment. Can be used for describing reasons of void or for passing another data about operation (max length is 2048 characters) | |
| server_url | URL | Webhook notification will be sent to this URL | 
Request example:
$ curl "https://cpay.tranzzo.com/api/v1/void" \
    -H "Content-Type: application/json" \
    -H "X-API-AUTH: CPAY-HMAC-SHA1 ${API_KEY}:${SIGNATURE}" \
    -H "X-API-KEY: ${ENDPOINTS_KEY}" \
    -X POST -d '{
      "pos_id":         "${POS_ID}",
      "order_id":       "123",
      "order_currency": "UAH",
      "comment":        "10101",
      "server_url":     "https://callback.blackhole.com/callback/"
    }'
Response parameters:
| Parameter | Type | Description | 
|---|---|---|
| operation_id | UUID | Unique Tranzzo void identifier | 
| payment_id | UUID | Tranzzo payment identifier of primary operation | 
| order_id | String | Merchant's order_idof primary operation (max length is 32 characters) | 
| transaction_id | UUID | Unique Tranzzo transaction identifier | 
| pos_id | UUID | Merchant's identifier ( POS_ID) | 
| mode | MODE | direct | 
| method | METHOD | void | 
| amount | Number | Actual void amount | 
| currency | CURRENCY | Transaction currency | 
| status | STATUS | Transaction status | 
| status_code | STATUS_CODE | Tranzzo payment status code | 
| status_description | STATUS_DESCRIPTION | Tranzzo payment status code description | 
| created_at | TIMESTAMP | Timestamp when transaction was created | 
| processed_at | TIMESTAMP | Timestamp when transaction was updated last time | 
| fee | Object | Amount and currency of commission | 
| comment | String | Void comment | 
Response example:
{
  "operation_id":        "f7d0c7cb-af32-441f-b2af-4d90d4da70e1",
  "payment_id":          "fdf1a710-8a34-414c-b023-b7e78104301a",
  "order_id":            "123",
  "transaction_id":      "4f98dc46-ffff-4ba7-a267-286fe7669894",
  "pos_id":              "dc728de1-51ef-4ef1-80f7-3b44b07b5667",
  "mode":                "direct",
  "method":              "void",
  "amount":              100,
  "currency":            "UAH",
  "status":              "success",
  "status_code":         "1009",
  "status_description":  "Reverse successful.",
  "created_at":          "2018-10-10T10:10:10.100",
  "processed_at":     "2018-10-10T10:10:12.000",
  "fee":                 null,
  "comment":             "10101"
}
To test the void payment process:
- Perform the initial backup operation using the authentication data of the test project.
- Initiate a secondary operation of Void for the primary pre-authorization operation.
- Configure webhooks.
- Use the test data to obtain different operation result codes.
- Handle received errors.
After completing the testing to go live, you need to make changes to the authentication data, using the data of the previously created live project.