https://docs.oracle.com/applications/farel12/projectop_gs/OAPFM/OAPFM2264569.htm#OAPFM2159921 Configuring Rapid Implementation: Procedure Project application administrators can use the rapid implementation feature to set up the Project Financial Management offering. Use the Rapid Implementation for Project Financial Management Applications macro-enabled Microsoft Excel spreadsheet to enter setup data and generate the ProjectsWorkbook.zip. Upload this .zip file to the Setup and Maintenance work area. When the upload completes, the offering is configured based on the setup information that you provide.
Perform the following steps to configure rapid implementation for the Project Financial Management offering:
Prepare setup data.
Generate CSV files.
Upload setup data.
Correct errors, if any, and reload the data.

Ref: https://docs.oracle.com/en/cloud/saas/project-portfolio-management/18b/fapap/Use_cURL.html REST API = REpresentational State Transfer (REST) Application Programing Interface (API)

Ref: https://docs.oracle.com/en/cloud/saas/project-portfolio-management/19a/oapfm/project-foundation-configuration-manage-project-types.html#OAPFM220111 Topic - Asset Cost Allocation Methods: Explained The asset cost allocation method determines how indirect or common costs incurred on a project are allocated to multiple assets.
You can specify an asset cost allocation method to enable Oracle Fusion Project Costing to automatically allocate unassigned asset lines and common costs across multiple assets. Unassigned asset lines typically occur when more than one asset is assigned to an asset grouping level.
Projects and project templates inherit a default asset cost allocation method from the associated project type. You can override the default at the project level. If you use capital events to allocate costs, then you can also override the asset cost allocation method at the event level.
The following table describes the available asset cost allocation methods.
Method
Basis of Cost Allocation
Actual Units
Number of units defined for each asset
Current Cost
Construction-in-process (CIP) cost of each asset
Estimated Cost
Estimated cost of each asset
Standard Unit Cost
Combination of the standard unit cost and the number of units defined for each asset Spread Evenly Equal allocation of cost to each asset