Reserved attributes

Reserved attributes in Naxai are designed to facilitate essential functions within the platform.

You'll find them under People Attributes, being marked with the grey "Reserved" label, meaning they cannot be deleted.

The table below shows an overview of the usage, format and validation of every reserved attribute:

Attribute	Usage	Format & Validation
nxId	Unique identifier of contact in Naxai. Read-Only	UUID v4
email	Identifier for email	Valid RFC 5322 email address
phone	Identifier for phone	Valid phone number E165 without leading 0 E.g. 32478112233
externalId	Identifier for externalId	max 64 chars, and only the following chars are accepted: A-Za-z0-9_-./
createdAt	The date when contact was created. If not provided, the date and time of the creation are used. You can override this value when creating and updating the contact.	Valid Unix epoch
createdAtNaxai	The date when contact was created. Read-Only value cannot be overridden.	Valid Unix epoch
unsubscribed	This attribute identifies whether an individual is subscribed or unsubscribed from your campaigns and broadcasts.	a boolean value: true or false
smsCapable	Indicates if the phone is a mobile phone or not.	a boolean value: true or *false
language	Indicates the speaking language of the contact	Valid language in ISO 639-1 Code