Creating precise and imprecise occurrences

When you add a component to an assembly, you create an occurrence of the item or item revision in the assembly. Teamcenter displays the item or item revision as a line in the product structure. The occurrence is precise or imprecise, depending on whether the BOM view revision is precise or imprecise in the parent assembly. Teamcenter applies the following rules: If the BOM view revision parent assembly is precise, the occurrence references the specific item revision for the component that you pasted. If you add an item, the revision is chosen by the revision rule. If no revision is found that satisfies the revision rule, Teamcenter displays an error message. If the BOM view revision parent assembly is imprecise, the occurrence references an item for the component. The revision is determined by the revision rule.

Note If you try to paste an item revision with an imprecise BOM view revision into an item revision that has a precise BOM view revision, Teamcenter may display a warning message. If you paste an imprecise assembly into a precise structure, it displays a warning. If you paste a precise assembly, Teamcenter applies the precision of the parent assembly and does not display a warning.