We can scale A-sized documents (e.g. A7, A6, A5, A4 etc.) up or down automatically.
This is because A-sized documents keep the same dimension-ratio as each other, which means they can automatically be scaled up or down proportionately.
As a result, if you've selected to scale your document, please note that any content in your document (text, images, margins etc.) will also be scaled up or down respectively.
However, if your artwork size does not match the chosen paper size, you will need to choose one of the 'scale artwork' options in the Configure Tab.