I find out that if a GA property MEASUREMENT ID is used in few Google Tag Managers then DebugView of this GA property stops working for all GTM-s. Probably, except the last one where it was configured (not 100% sure).
I saw and fixed this situation for few customers.
A workaround is to delete all duplicated usages of this MEASUREMENT ID in GTM-s, then the DebugView starts to work again but with a delay in 5-10 minutes.
My question is, is there a way to find out which GTM-s are using a MEASUREMENT ID if I’m the owner of a GA Property of this MEASUREMENT ID?
I do not want to go through all GTM-s and check them manually.