Authoring manufacturing process plans > Creating in-process assemblies > Creating legacy in-process assemblies
Update an in-process assembly
If you change a process structure, you can update an in-process assembly that already exists, but you cannot change the options that you set at creation. As with IPA creation, you should update assembly trees overnight, or at a time when the processes involved are not being changed. Updating an assembly tree can be very time-consuming, depending on the processes involved.
Procedure
Select the process in the process structure containing the IPA that you want to update.
Choose Tools→Assembly Tree→Create/Update Assembly Tree.Teamcenter displays the Create Assembly Tree dialog box. The next steps depend on whether there are multiple products configuring the process structure.
If multiple products configure the process, select the desired configuring product and click Continue.
If only one product configures the process structure, confirm the selection and click Continue.
Teamcenter displays the Update Assembly Tree dialog box.
- Click OK. Teamcenter updates the existing in-process assembly.
Source: https://docs.sw.siemens.com/en-US/doc/282219420/PL20251212545240207.mse/ipa_update · retrieved 2026-07-11