Is there a way to add a note to the transaction or another way to track

Is there a way to add a note to the transaction or another way to track these in Square?

As far as I know the Square integration does not allow custom data, you will be able to pass over the amount and credit card  details in order to process the data, but so far the API does not support any other data; however, rest assured that this will be implemented as soon as it's possible. 

Thank you.