A few hard limits and fixed behaviors apply across every view:
Limit | Value |
Data Highlights fields per card | Max 4 per row |
Fields (Properties) card limit — Left/Right/Center | 50 fields |
Card instance name length | 60 characters |
Profile Summary character limit | 5,000 characters |
Undo after publishing a view | Not available |
Things to know:
Hitting a field limit on a Fields card means you'll need a second card instance for a different category, or trim the field list.
Because there's no undo after publishing, it's worth screenshotting a working layout before making major changes to it.