Confirmation from the Construction Site Using CATS 
Purpose
Determining how many work hours are required and from which cost center is a task for the personnel planning department for the construction site. Exact confirmations from the site for the required working time are of great importance if you wish to plan and execute the project realistically. The CATS time sheet (Cross Application Time Sheet) allows you to enter working time and is a self-service application for internal employees and external agencies.
The work done is then transferred to the Project System. Since an authorization procedure is in force, the confirmation has to be authorized before the transfer.
You can find further information in the SAP Library under Logistics ® Project System ® Confirmation and under Cross-Application Components ® CA Time Sheet.
Process Flow
Create a poll of confirmations for the WBS element for the site facilities.
Entering a Confirmation Using the Time SheetEmployees record their working hours on the time sheet. Two employees release this data for authorization.
Displaying Confirmed DataAfter a while, you, as supervisor, require an overview of the status of the work that has already been completed. A traffic light function informs you of the processing status.
Approving and Authorizing Confirmed DataSince an authorization procedure is in force, the confirmation has to be authorized before the transfer. As supervisor, you approve the confirmations made by one of your employees. You do not approve the work done by another employee.
Displaying a Reason for Rejection Transferring Data to the Project SystemYou transfer data that is required in the Project System to the Project System.