Returns the auto-enrollment groups available for selection when configuring a Device Add-In on a database. Use this before calling the Add/Remove auto-enrollment groups APIs to discover the set of valid group IDs for a database. Only reseller users can call this method. Groups are database-scoped in MyGeotab and are not constrained by Add-In — every group in the database is a valid auto-enrollment candidate for any Add-In installed on that database, so no solutionId is required.