Void Transaction
Voiding a transaction will exclude it from being calculated in your account balance totals.
This operation is a relatively simple change of the transaction status. To perform it, start by opening the list of transactions in an account.
Identify the transaction you want to void and long-press on it until it is selected and a toolbar with additional options shows up on top.
In the toolbar, tap on the Change Status button. It is the one that looks like a tag.
Once selected, you will be prompted to select the desired status.
Select Void in this dialog and the transaction will be voided.