Logshipping is failing intermitently Client has setup logshipping one of the database. Out of 3 steps in logshipping - backup and copy works without any issues, but restore fails intermittently giving 'out of sync' error.
When I pulled backup/restore history using query, I am getting some entry with 'NUL' for physical device name as shown below.

Is that is causing issue? How to resolve this issue?
Thanks
Naveen
it seems that your log shipping is working fine. Just remove additional log backups from maintenance plans since they can break log shipping.