---
title: "Incremental Auth"
method: POST
path: "/?incremenal-auth"
---

# Incremental Auth

`POST /?incremenal-auth`

## Request body

- object
  - `appid` string, required — Merchant APP ID (Alphanumeric - Length of 32 chars and special chars $@%#)
  - `appkey` string, required — Merchant APP KEY (Alphanumeric - Length of 32 chars and special chars $@%#)
  - `epi` string, required — EPI is an end point identifier, Identify the device on valor infrastructure, it's a 10 digit number starts with 2
  - `txn_type` string, required — sale Amount of the purchase will be deducted from the cardholder's bank account
  - `amount` number, double, required — Transaction amount - Maximum amount $99,999.99 (Ex: 0.1 to 99,999.99). A request should not be sent when the amount is 0. The amount must be greater than zero
  - `ref_txn_id` string, required — Auth transaction ID
  - `surchargeIndicator` string — Surcharge Indicator
  - `child_epi` string — If the merchant has multi-MIDs, they need to send both the child EPI and the parent EPI in the EPI request

## Response `200`

200

- object

## Other responses

- `400` — 400

---

[API](https://skmtc.net/valorpaytech/apis/ecommerce-api.md) · [All operations](https://skmtc.net/valorpaytech/apis/ecommerce-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/valorpaytech/ecommerce-api/versions/c6468b606325/schema)