Process Messages Edit Line - six dates - which dates ends up where?

I'm trying to use B3401360 in a ube.
This is the "Process (MRP) Messages Edit Line".

It has six parms that are dates.
DRQJ (Date requested); STRT (start date); RSTJ (recommended start);
RRQJ (recommended completion); REDJ (recommended effective); OEDJ (original effective).

The msg type that I'm processing is to firm a ORDER TRANSFER
(which creates an F4311-OT, F4211-ST, and F4801-WT).

Is it documented (somewhere) which date ends up where,
or how the F4311, F4211, and F4801 dates are set?

Are these interrelated dates controlled by integrity rules?
Is there any way around those rules?

TIA

Gene