Troubleshooting revamp

1

Past time

Obvious, no action needed—don't waste user's time

2

Calendar not connected

System failure—user can't trust any availability data until fixed

3

Outside host's availability

Fundamental—if hours aren't set, nothing else matters

4

Date range exceeded

Event-level setting—slot was never meant to be bookable

5

Holiday marked

Explicit intent to be unavailable

6

Availability override

Explicit override for specific date

7

Calendar conflict (external)

External calendar blocking—actionable by changing event to "free"

8

Overlapping meeting (internal)

Another booking in your system

9

Lead time / Minimum notice

Time-based rule blocking near-term slots

10

Buffer time

Adjacent meeting's buffer eating into this slot

11

Meeting limit reached

Capacity constraint

12

Duration mismatch

Gap exists but isn't long enough

13

Team/Host unavailable

Collective event specific

14

Round-robin fairness

Team distribution rule

15

Group event full

Capacity for group events

16

Reserved/Pending

Temporary hold

17

Time slot interval mismatch

Edge case configuration issue