I have created a new collection for DC Universe Animated Original Movies as it did not exist.
I tried to add all 29 titles that belong to that collection but I get the above error message when I am trying to add the below titles.
- Superman Batman Public Enemies
- Superman Batman Apocalypse
- Batman: The Dark Knight Returns, Part 1
- Batman: The Dark Knight Returns, Part 2
- Justice League: The Flashpoint Paradox
- Justice League: War
- Son of Batman
- Justice League: Throne of Atlantis
- Batman vs. Robin
- Batman: Bad Blood
- Justice League vs. Teen Titans
- Teen Titans: The Judas Contract
Any Ideas why this is happening?