In Projects Control, How to obtain the Codified Project Site Data (Actual Value) used to compare with the Planned Value and Earned Value?

Planned Value are determined prior to Start of a Project while Earned Value are determined while the Project Progressing.

I may say, Earned Value is Equal to Planned Value if the Project Progressed as Scheduled.

The Actual Value, it consist of actual expenses. The question was how to obtain (I mean the Process) the Codified Data of the ACtual Value.

Usually it is assumed that the Earned Value shall be equal to the planned Value of the Project. The changes comes when the Design of the project missout some components essentialy requre to complete the project. secondly, if there is change in the scope of work. proper documentation of these changes shall bring out actual project value in compare with the planned value.