The expenditure type class that is recommended for the expenditure types that need to be defined for work order labor and equipment resource transactions is Work In Process. This class indicates that the transactions are related to work orders that are performed as part of a project-driven supply chain solution. This class also allows the transactions to be processed by Oracle Fusion Manufacturing applications and transferred to Oracle Fusion Project Costing applications. Supplier Invoice is not a valid expenditure type class for work order labor and equipment resource transactions. This class indicates that the transactions are related to supplier invoices that are entered in Oracle Fusion Payables applications and transferred to Oracle Fusion Project Costing applications. Usages is not a valid expenditure type class for work order labor and equipment resource transactions. This class indicates that the transactions are related to material usages that are entered in Oracle Fusion Inventory Management applications and transferred to Oracle Fusion Project Costing applications. Inventory is not a valid expenditure type class for work order labor and equipment resource transactions. This class indicates that the transactions are related to inventory movements that are entered in Oracle Fusion Inventory Management applications and transferred to Oracle Fusion Project Costing applications. https://docs.oracle.com/en/cloud/saas/project-portfolio-management/20c/oapfm/manage-project-costs.html#OAPFM2356311