A way of going back a screen when in the Record Purchase Invoicetabs.

Its become apparent that there doesn't appear to be a way to go back onto the 'record purchase invoice' screen to potentially amend quantities, amounts, nominals and descriptions. If something is incorrect, you would then need to post the invoice fully before going into the supplier transactions and making a correction. I think being able to 'close' the screen to revert back to the previous tab to allow any amendments would shorten the process and may be beneficial.