Challenging a guilty plea on appeal in Georgia is sharply limited, because a guilty plea gives up most of the rights that an appeal would otherwise protect. By pleading guilty, a defendant waives the right to a trial and the right to contest the evidence, which leaves only narrow grounds for a later challenge. Those grounds generally involve the court’s jurisdiction, the voluntariness of the plea, or the legality of the sentence imposed.
Voluntariness is the most common avenue. A plea must be entered knowingly, voluntarily, and intelligently, so a challenge may argue that the defendant was coerced, did not understand the consequences, or was induced by a promise that went unfulfilled. A claim that defense counsel was ineffective in a way that made the plea involuntary can also open the door.
Plea agreements often narrow the path further. Many agreements include an express waiver of the right to appeal, which restricts review even more, though such a waiver does not bar a claim that ineffective assistance made the plea itself invalid.
The procedural route can be limited too. A direct appeal from a guilty plea is available only when the issue can be resolved from the existing record; when it cannot, the challenge usually has to proceed through a separate habeas corpus petition instead. Mental competency at the time of the plea can also be raised where the facts support it. The overall picture is that a guilty plea is meant to be final, and undoing one requires showing something fundamentally wrong with how it was entered, not simply a change of heart about the bargain.