# UUIDs

The majority of objects in the API use a [universally unique identifier](https://en.wikipedia.org/wiki/Universally_unique_identifier) (uuid) as an identifier. The uuid is a number, represented as 32 hexadecimal digits. There are a number of different versions of the uuid, but this API uses only uuid version 1.

When a new record (that uses a uuid) is created, this uuid can be generated by the client and included in the POST call. If left blank, it will be automatically created by the server and return it in the response.

An example uuid is: `206c7392-b05f-11e8-96f8-529269fb1459`


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