Hi,
For this the way, I look at your solution options are :
OPTION # I:
Step # 1: Have a Condition Exclusion, as I had pointed out in the earlier reply - PR00 Auto and ZPR0 Manual.
Step # 2: Create another one with RA00 and ZPR0 where ZPR0 becomes Exclusive when it is active and RA00 is deactivated.
OPTION # 2:
I do not know if this is technically feasible at all or if it is how easy it is but here is how you can try your solution.
Have a requirement attached to RA00 which checks if PR00 Condition Type has KOMV-KMPRS is checked ON and deactivates RA00. Of course this is a Structure and hopefully your ABAP Resource can help.
OPTION # 3:
I do not know, if there is technically feasible at all or if it is how easy it is but here is how you can try your solution.
A combination of Option # 1 and Option # 2, where you have Condition Exclusion between PR00 and ZPR0.
In RA00, have a requirement which checks if ZPR0 is present in Pricing and deactivates RA00.
Hope this helps.
Thanks.