Use the Renumber all option when the numbering needs to be started over. This option permanently removes the existing position numbers and resets them with new ones. Any existing drawings will also be removed.

1. On the Drawings & reports tab, click Numbering settings > Numbering settings to open the Numbering Setup dialog box.
2. Select the Renumber all check box.
3. Click Apply or OK.
4. On the Drawings & reports tab, click Perform numbering > Number modified objects.
5. When you are asked to confirm the renumbering of the model, click Yes.

   Tekla Structures renumbers the entire model.