Given a userId and optional filters, this endpoint will fetch filtered categorised transactions across all of a user's accounts, sorted in descending order by the created datetime of the transaction. Transactions include an optional field seriesMetadata that will be present when a transaction has been highlighted as being part of a series. A series will identify any transactions that have a recurring behaviour. Examples of series transactions include rent and salary. If DataOne has set up a server-side filter to restrict transactions to the latest X months, then this endpoint will not return any transactions prior to the latest X month period. In this scenario, the response status would continue to return 200 OK.