Create an exchange session for a customer #

To initiate Instant Account Verification for a customer using Dwolla's trusted open banking partners, you'll need to create an exchange session. Currently, Visa and MX are the supported partners.

When creating an exchange session, provide the following information:

_links.exchange-partner: The unique identifier for the desired open banking partner. Use the list exchange partners endpoint to retrieve available partners and their corresponding identifiers.
_links.redirect-url (conditional): A required redirect URL for Visa exchange sessions. This URL will be used to redirect the user back to your application after completing the authorization process. For MX exchange sessions, this parameter is not required.

HTTP request #

POST https://api.dwolla.com/customers/{id}/exchange-sessions

Request parameters #

Property	Required	Type	Description
_links	yes	object	A HAL-JSON link that represents the Exchange Partner resource. This identifies the open banking provider used for creating the exchange session. Note: When using Visa as the exchange partner, a redirect url must also be provided within the _links object. This redirect URL will be validated against a previously configured redirect URL stored in Dwolla. The validated redirect URL will be used to redirect the user back to your application after they complete the authorization process with Visa.

HTTP status and error codes #

HTTP Status	Code	Message	Description
201	-	-	The Dwolla API accepted the request and created an exchange session resource. You can reference the Location header to retrieve a link that represents the created exchange session resource.
400	Invalid	/_links/exchange-partner/href is invalid.	ValidationError. Returned if the exchange partner URL is invalid.
400	Invalid	/_links/redirect-url/href is invalid.	ValidationError. Returned if the redirect URL is invalid.
400	Invalid	The provided redirect URL must exactly match one of the configured URLs for the account.	ValidationError. The redirect url does not match what is configured for the Dwolla account.
401	InvalidScope	Missing or invalid scopes for requested endpoint.
403	Forbidden	The exchange partner specified does not support this product.	Returned if the exchange partner specified does not support the creation of exchange sessions.
404	NotFound	The requested resource was not found.

Request and Response (Visa) #

Raw

POST https://api.dwolla.com/customers/74a207b2-b7b7-4efa-8bf8-582148e7b980/exchange-sessions
Accept: application/vnd.dwolla.v1.hal+json
Content-Type: application/vnd.dwolla.v1.hal+json
Authorization: Bearer pBA9fVDBEyYZCEsLf/wKehyh1RTpzjUj5KzIRfDi0wKTii7DqY

{
    "_links": {
        "exchange-partner": {
            "href": "https://api.dwolla.com/exchange-partners/292317ec-e252-47d8-93c3-2d128e037aa4"
        },
        "redirect-url": {
            "href": "https://www.yourdomain.com/iav-callback"
        }
    }
}

HTTP/1.1 201 Created
Location: https://api.dwolla.com/exchange-sessions/fcd15e5f-8d13-4570-a9b7-7fb49e55941d

Overview

Create a re-auth exchange session

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Financial institutions play an important role in our network.

All funds transfers made using the Dwolla Platform are performed by a financial institution partner, and any funds held in a Dwolla Balance are held by a financial institution partner. Learn more about our financial institution partners.