We've deployed a few hundred iPads and have only had this happen twice. When this particular user navigates to the Self-Service and tries to download any free app they're fine; however, when they've tried to download our two applications that were prepaid with Volume Purchase Program codes (Pages & Keynote) they're prompted to Install, then input their Apple ID password, and are followed with a notice stating: "The code you entered has already been used."
Has anyone experienced this and how did you fix it? This happened for both the apps this user tried.
