error code 23 after 10:06 minutes execution

Hi all,

I have a policy that always fails with error code 23 after exactly 10 minutes and 6 seconds, no matter if it's a full or incremental backup. I think it should be a timeout config. but I don't find which one. I'd tried changing CLIENT READ TIMEOUT in the client from 300 to 3600 but still the same issue... any idea?

Thanks