Generation of CO1P records and CORUPROC

Dear Experts,

I have read a few notes regarding CORUPROC and CO1P but still have some questions as follows:

1. For an instance, I need to intentionally create CO1P records for testing. Is this possible? If yes, please give me a few examples.

2. What does the indicator Actual cost calculation do? Is it recommended to be checked?

3. For my understanding Checking "Backflushing" indicator would send the locked records to COGI. Also the indicator "Incl. Faulty Goods movement" will attempt to post those records in COGI.  Is this correct?

4. Running CORUPROC for CO1P and COGI would mean CORUAFWP is not necessarily required. It that correct? Because I see CORUPROC contains all functionalities that CORUAFWP provide.

I appreciate all your invaluable answers.

Regards,

Thomas