,,,,Row with hierarchy &1 missing.

,,,,When deleting rows , ensure that there are no gaps in the hierarchy.

,,,,If the row has to be deleted for any reason, then either deletethe rows with hierarchy lower than ,,,,,,the one deleted or create anew row with the same hierarchy as the deleted one to avoid,,,,,,,,,,inconsistencies.

,,,,Please note that Generation errors will arise if the hierarchy isnot properly maintained.