Incremental Authorization

Overview

The incrementalAuthorization method increases the authorized amount on an existing authorization that is still in AUTHORIZED status. Use this for hospitality, tips, or add-on charges.

Business Use Case: A hotel guest adds room service charges to their folio. Increase the authorization hold to cover the additional charges.

Purpose

Scenario	Benefit
Hotel incidentals	Add room service, mini-bar charges
Restaurant tips	Add post-dining tip
Add-on services	Cover additional costs
Metered services	Extend hold for actual usage

Request Fields

Field	Type	Required	Description
merchantAuthorizationId	string	Yes	Your unique incremental auth ID
connectorTransactionId	string	Yes	Original authorization ID
amount	Money	Yes	New total amount (not incremental amount)
reason	string	No	Reason for increase

Response Fields

Field	Type	Description
connectorAuthorizationId	string	Connector's authorization ID
status	AuthorizationStatus	AUTHORIZED, FAILED
error	ErrorInfo	Error details if failed
statusCode	number	HTTP status code

Example

SDK Setup

const { PaymentClient } = require('hyperswitch-prism');

const paymentClient = new PaymentClient({
    connector: 'stripe',
    apiKey: 'YOUR_API_KEY',
    environment: 'SANDBOX'
});

Request

const request = {
    merchantAuthorizationId: "incr_auth_001",
    connectorTransactionId: "pi_3Oxxx...",
    amount: {
        minorAmount: 1500,  // New total: $15.00 (was $10.00)
        currency: "USD"
    },
    reason: "Room service charges added"
};

const response = await paymentClient.incrementalAuthorization(request);

Response

{
    connectorAuthorizationId: "pi_3Oxxx...",
    status: "AUTHORIZED",
    statusCode: 200
}

Important Notes

• The authorization must have incrementalAuthorizationAllowed: true

• Pass the new total amount, not the incremental amount

• Can only increase while in AUTHORIZED status

Next Steps

• authorize - Create initial authorization (set requestIncrementalAuthorization: true)

• capture - Finalize with increased amount