What changed
A relaxation. Existing payloads are unaffected.
Affects CustomAttributeDefinition reachable from 40 operations.
can now be null
Who is affected
Code that sends Square's CustomAttributeDefinition objects, used by 40 Square operations.
Before and after
| Where | Before | After |
|---|---|---|
| CustomAttributeDefinition.key | string | null|string |
Based on Square’s published API specification. How severity is decided.