Organisation ID
An Organisation ID is your unique identifier in Apple School Manager. When you give a participating Apple Authorised Reseller or an authorised mobile network provider your Organisation ID (and you add that reseller’s Reseller Number to your account profile), you authorise that reseller to submit devices you purchased through them to Apple so their serial numbers appear in Apple School Manager. The Organisation ID can also be used with app developers so they can distribute Custom Apps specific to your organisation.