How to solve this error

I am currently expanding the Canadian pyramid and I have come across an error when testing or verifying competitions that I am unsure how to rectify. The error can be seen in the below screenshot:

its a problem with fixture rules, but i dont know how to solve

I cover this in the FAQ I put up point [25]

I cover this in the FAQ I put up point [25]

Thanks for that mate. Solved that problem. I do have another “issue” that I couldn't see in your FAQ though. I have a league that is split into 3 groups. After the mid season break, top 4 from each group go into one league and the remaining teams go into another.

As the groups are stage 0, would I need the next stages to have the same (1) or separate index numbers (1&2)? 

I would suggest 1 for the next stage [check league set ups like scotland/belguim]- I am away with no access to the editor 

I will close this thread as answer given to the opening post, if you have further questions start a new thread

cheers