Physical % Complete and Actual Cost

After finalizing the Baseline program and during Monitoring and Control the Project and Program of works, several factors need to be decided first i.e.
1) Update Type
1.1) Progress Override
1.2) Retained Logic
2) Progress Percentage Type
2.1) Duration %
2.2) Physical %
2.3) Unit %
Here we consider the Percentage type only as
DURATION %, both progress percentage and Elapsed/Remaining duration are interconnected, that if we provide one INPUT the remaining will be calculated automatically, whereas in Physical % is more flexible that the planner have control on both % complete and remaining duration.
As a construction planners we know that if we are not getting the desired productivity the remaining duration will not depend on DURATION % type.
There are several PROGRAM settings for P6 to be considered before start updating the program, together with the some settings are required at RESOURCE LEVEL also, as we can link the BUDGETED Cost with the resource, and in this case by defining Resource unit cost, the Budgeted cost will be computed by multiplying the duration with the resource unit cost.
When we are updating the program, it is recommended to provide ACTUAL COST manually and don't let the system to calculate Actuals, it is always recalculate the actuals and will even overwrite the values Planner entered.
Actual Units and Cost is determined based on the Actual time sheet and payment made to different suppliers/subcontractors respectively.
As per EARNED VALUE MANAGEMENT also, actual cost is not depending on any Plan/schedule and physical %, and it is incurred cost.