These docs are for v2.5. Click to read the latest docs for v3.0.
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Asynchronous Connections

Connections can be made to banking providers without having to wait for the first batch of accounts and transactions data returning. This will allow for connections to be completed quicker, helpful for connections made to the legacy connections.

Making a connection asynchronous is done when generating the authorisation URL for the connection.

A syncCompleted webhook is sent when the transactions are fetched to notify you when transaction data is available.