Type: integer
Required: Optional

The Unix timestamp (in seconds) indicating when the token will expire.

If not provided, a default expiration time is applied depending on how the token is created.

Default Expiration

Valid Range

The expiration time must fall within the following limits:

Minimum: 10 seconds from the current time
Maximum:
- 5 minutes when using sellerDomainOrUrl
- 24 hours (86,400 seconds) when using sellerServiceId