Help with test run

Hello, im currently adding a created team called ‘Northam FC’ into the ‘English Level 20’ database. 

When i test all English levels in says ‘Error in nation rules’ then underneath that says “need 815 minimum and 816 maximum when organising teams in level 11 - Only 814 found”

But when i test run just level 11 its says it verifies no problem. Any help would be massive grateful.