Ref: https://docs.oracle.com/cd/E48434_01/fusionapps.1118/e49622/F1125394AN6D254.htm Primavera P6 Enterprise Project Portfolio Management and Oracle Fusion Project Portfolio Management: How They Work Together Use Oracle Fusion Project Integration Gateway to integrate Oracle Fusion Project Portfolio Management with Primavera P6 Enterprise Project Portfolio Management. The integration enables project accountants, project billing specialists, and executives to centrally perform project costing, billing, accounting, and executive reporting tasks in Oracle Fusion Project Portfolio Management while enabling each project manager to perform detailed project planning and scheduling in Primavera P6 Enterprise Project Portfolio Management.
Oracle Fusion Project Integration Gateway ensures data security, integrity, and efficiency by defining a set framework in which data is exported from and imported into Oracle Fusion Project Portfolio Management.
The following table and diagram provide an overview of the flow of information.
Information Type
From Application
To Application
Global integration information
Oracle Fusion Project Portfolio Management
Primavera P6 Enterprise Project Portfolio Management
Projects and task definition
Oracle Fusion Project Portfolio Management
Primavera P6 Enterprise Project Portfolio Management
Summarized project actual quantity and cost
Oracle Fusion Project Portfolio Management
Primavera P6 Enterprise Project Portfolio Management
Project plans and progress
Primavera P6 Enterprise Project Portfolio Management
Oracle Fusion Project Portfolio Management
Billing events
Oracle Fusion Project Portfolio Management
Primavera P6 Enterprise Project Portfolio Management
Event completion
Primavera P6 Enterprise Project Portfolio Management
Oracle Fusion Project Portfolio Management

The project resource search index is used to store and retrieve information about project resources such as their availability, qualifications, preferences, etc. The project resource search index is used for three purposes:
Display resource details: The project resource search index provides the resource details such as name, email, job title, organization, etc. that are displayed on the resource search page.
Filter counts while you search for resources: The project resource search index provides the filter counts that show how many resources match each filter criterion on the resource search page.
Calculate Resource Qualification Scores: The project resource search index provides the qualification information such as skills, certifications, languages, etc. that are used to calculate the Resource Qualification Scores for each resource based on their match with the resource request. The project resource search index does not provide absence details for resources or calculate Resource Availability Scores. These are provided by other components such as Oracle Fusion Absence Management and Oracle Fusion Human Capital Management. https://docs.oracle.com/en/cloud/saas/project-portfolio-management/20c/oapfm/manage-project-resources.html#OAPFM2356181

When you reclassify the billing offset balances in the first period, the accounting entry is:
Dr Accounts Receivables 10000 - Cr Unbilled Receivables 10000
This entry reduces the unbilled receivables balance and increases the accounts receivables balance by the invoice amount. This is because the invoice has been created and sent to the customer, and the billing offset account is no longer needed. https://docs.oracle.com/en/cloud/saas/project-portfolio-management/20c/oapfm/manage-project-invoices.html#OAPFM2356091

Ref: https://docs.oracle.com/en/cloud/saas/project-portfolio-management/19b/oefpp/overview.html#External_Data_Integration_Services_for_Oracle_Cloud_Overview

Reference https://docs.oracle.com/cd/E51367_01/projectop_gs/OAPJC/F1071488AN1004C.htm To import and process third-party transactions that are costed and accounted, you need to set the Transaction Source Options for the transaction source that you use to import the transactions. The Transaction Source Options allow you to specify whether the transactions are costed and accounted by the source system or by Oracle Fusion Cost Management. You can also specify whether to validate and transfer costs and accounting entries to projects and general ledger. https://docs.oracle.com/en/cloud/saas/project-portfolio-management/20c/oapfm/manage-project-costs.html#OAPFM2355941