The Transactions tab on the Contact Information screen shows you a list of the Bills and Payments for the client. Bills are positive transactions, while payments are negative transactions.
You can also enter payments for clients here by clicking the Add Payment/Correction button. If there is more than one Invoice with an outstanding balance, you will be asked to choose which invoice to apply the payment. If there is only one invoice with a balance, then the payment will automatically be applied to it, and the amount will default to be the balance on the invoice.
If for some reason you have a number of Correction entries that have appeared without you inputting them yourself, then it is probably because there were changes made to an Invoice after the status on the order was marked as Done. In this case, you can remove those corrections and corrected bills by going to this Transactions tab of the client information screen and choosing the Other option. This will list all the corrected bills and corrections. You can then feel free to delete all of those transactions. For more information on why this happens, see the topic about multiple Bills and Corrections.
