Referencehttps://docs.oracle.com/en/cloud/saas/project-portfolio-management/19b/oapfm/define-project-organizations.html#OAPFM177674

Settings That Affect Performance Data Summarization

You can summarize performance data for a project unit, business unit, a range of projects, or projects managed by a project manager. When you run the Update Project Performance Data process from the Scheduled Processes page, select one of the summarization methods from the following table:

Summarization Method

Usage

Incremental

Summarizes new transactions that are yet to be summarized

Delete and re-summarize

Correct summary data when the source system data changes outside the regular transaction flow.

Do not use this summarization method when you run the Update Project Performance Data Without Producing Report process unless you are advised to do so.

Resource breakdown structure

Migrate all summary data from one resource breakdown structure version to the next.

If you select this option, you must also specify the resource breakdown structure header.