Appealing an AdSense decision is the process of requesting a review of a decision made by Google regarding your AdSense account. This could be a decision to disapprove your account, suspend your account, or place restrictions on your account.
There are a number of reasons why you might need to appeal an AdSense decision. For example, you might believe that Google has made a mistake in disapproving your account or that the restrictions that have been placed on your account are unfair.