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The Attributes tab is used to define attributes for the thing definition. Attributes are simple key-value pairs for that are used to define characteristics of a thing. For example, the VIN on a car, a serial number of a piece of equipment, a customer name, and so on. If the Auto def attributes field is selected in the thing definition, a thing automatically defines a key-value pair, that was not previously defined in the thing's thing definition.

Unlike properties and alarms, attributes do not have a timestamp component, so they cannot be graphed on the thing's page in the Management Portal. The attribute's value is displayed on the thing's page.

Selecting the + Attribute Definition link will display a New attribution definition section. Selecting the - Delete attribute definition link will delete the currently displayed attribute.

Enter or select the fields for the new attribute definition. The fields are:

FieldDescription
KeyThe key for the attribute definition.
A key is an identifier that must be globally unique within the organization.
The valid characters for a key are letters, numbers, "_" (underscore), and "-" (hyphen).
NameThe name of the attribute definition that is displayed on Management Portal pages.
Default valueThe value that should be returned if the attribute has never been set before.
View security tagsEnter any number of tags to the attribute that controls whether a user or application can view the attribute. The user or application must have a role that has the same view security tag associated with it in order to view an attribute with a view security tag associated with it.
Update security tagsEnter any number of tags to the attribute that controls whether a user or application can update the attribute. The user or application must have a role that has the same update security tag associated with it in order to update an attribute with an update security tag associated with it.

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