Authorization Adjustment

Adjust Authorisation allows you to modify the previously authorised transaction amount, either by increasing or decreasing it, before it is captured.

This is useful in industries where the final charge amount may not be known at the time of initial authorisation—such as hospitality, fuel, or car rental services.

Adjustments help reduce declines at the time of capture and improve customer experience by avoiding multiple holds on funds.

Use this when:

• The final charge differs from the initially authorised amount.
• Additional services or fees are added after the initial authorisation.
• You need to reduce the held amount due to cancellations or refunds.

Note: You need to specify the entire new Auth amount and not the difference.

Steps to Adjust Authorization

To Adjust an Authorization:

1. Use the PUT /checkout/v3/payment/{id} endpoint that includes:

   Parameter	Description
   ternderType	Set to CARD for card transactions.
   paymentToken	Secure payment token for the authorization to be adjusted.
   amount	New amount (in US currency units). Can be higher or lower than the previously mentioned amount.
   merchantId	Merchant's unique identifier.

2. PCE authorizes the payment with the issuer, captures the funds instantly. The GET /checkout/v3/payment/{id} endpoint gives a response with new amount.

   • amount: New amount as specified in the Adjust API.
   • status: Status of the payment. You will also receive the result in a webhook.

3. Wait for the Adjust Authorization webhook to learn the outcome of the request.

You can store the id and paymentToken for:

• Retrieving payment details later.
• Voiding the payment (if needed).
• Initiating Captures.
• Issuing partial or full refunds.