How to know if a process chain was successfully loaded?

Hi guyz,

I have two (2) process chains: MAIN_PC and SUB_PC..

MAIN_PC - scheduled everyday 3 AM

SUB_PC - scheduled every 8 AM

What do I need to add in my SUB_PC chain so that it will detect or know if MAIN_PC chain was successfully loaded..Since if MAIN_PC did not load or got an error during loading, SUB_PC must not run..Is there a way to do this?

The only solution I can think is to insert SUB_PC as LOCAL PROCESS CHAIN of MAIN_PC..However, I cannot do it since I AM NOT ALLOWED TO MODIFY MAIN_PC chain..

Any idea?

Thank you!