I have a request to change size of GroupId field in AssetGroup table from 10 to 18.
As far as i see, this field extends AssetGroupId EDT which in turn extends SysGroup ( and this way it takes the size of 10 ).
Is it the correct approach to stop extending SysGroup on AssetGroupId EDT and change the StringSize property to 18?
That is a possible approach, but it introduces update conflicts for the AssetGroupId EDT. Be also aware that with this approach you will to check all references for the EDT and all table fields that use the EDT if they need to be modified to fit the new EDT size.
Is there a reason why the Name field of table AssetGroup cannot be used to provide further information?