Dates and Times

All date and time values submitted to the Flex API must conform to ISO 8601. Flex supports two formats depending on whether a time component is required.

Date

Use for values that represent a calendar date without a time component, such as a customer's date of birth. The date should reflect the customer's local context (no timezone conversion required).

Format: YYYY-MM-DD

2025-02-20

This represents 20 February 2025.

DateTime

Use for values that represent a specific point in time, such as a transaction timestamp or event occurrence. All DateTime values must be in UTC and include the trailing Z designator.

Format: YYYY-MM-DDTHH:mm:ss.sssZ

2025-02-20T09:15:00.000Z

This represents 20 February 2025 at 09:15 UTC.

Note: DateTime values submitted without the Z suffix or with a non-UTC offset will be rejected.