What changed
A relaxation. Existing payloads are unaffected.
Affects CustomAttribute reachable from 20 operations.
can now be null
Who is affected
Code that sends Square's CustomAttribute objects, used by 20 Square operations.
Before and after
| Where | Before | After |
|---|---|---|
| CustomAttribute.key | string | null|string |
Based on Square’s published API specification. How severity is decided.