Reading the documentation for the cashflow endpoint I notice that the dates in the example call are not in the format that the documentation recommends. The YYYY-MM-DD format seems to work, so it might be worth updating the call url to reflect it.
Welcome to our API forum! My name is Katie and I’m a part of the engineering team here at FreeAgent.
Thank you for pointing that out to us! I will look to changing this so that we are using the correct date format.