To use this form, you must be a person who is currently serving a sentence under a judgment against you in a state court. are asking for relief from the conviction or the sentence. This form is your petition for relief. 2. You may also use this form to challenge a state judgment that imposed a sentence to be served in the future, but you must fill. in the name of the state where the judgment was entered. If you want to challenge a federal judgment that imposed a sentence.