Prevent numbering gaps By default, numbers are generated every time a new record is created. When records are created but not saved, a gap in the numbering is created. You can prevent these numbering gaps by generating numbers only when records are saved. Before you beginRole required: admin Procedure Navigate to System Properties > System. Set the property Assign a task number only upon insert (prevents unused numbers), glide.itil.assign.number.on.insert, to true. Click Save.