If the numbering is not up to date when you create a drawing, Tekla Structures asks you to number the model.
Set this advanced option to TRUE to number only the assemblies and parts that have the same numbering series as the selected part (or the main part of the selected drawing).
When set to TRUE , this advanced option does the same as if you clicked . TRUE is the default value.
If you set this advanced option to FALSE , Tekla Structures numbers the whole model, which is the same as clicking .
This advanced option is model specific and the setting is saved in the options database.