Hi Robert,
Adagio Inventory allows you to enter a list of allowable report group codes. In the File / Options screen, there is an option to 'Verify Report Groups', meaning that if you enter a value onto an item that is not in the Report Group list, an error will appear and prevent the invalid value from being saved.
Naturally this verification applies to editing items and not places such as printing reports by a specified report group range.
In regards to entering and sorting the 3-character report group codes, indeed leading spaces are trimmed away, so ' 01' becomes '01' without the space. Also, the sort is left-justified so that 'AAA' sorts before 'Z'.
Perhaps use a leading ASCII character like a period or a dash (instead of a space) to get '.01' or '-01' if you require the report group codes to be sorted in a particular way.
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Regards,
Softrak Tech Support