Defining the scope

Introduction

To use scope you must define an expression, read using scope and filter expressions for more information.

On this page:

The system has a number of predefined attributes for use in a scope expression.

The two scope expression limitations for Tachyon pre v3.2 are the:

Only operator supported in the expression tree object is AND
System only supports single level expression trees, for example you cannot have an expression tree object and an operand for another expression tree object.

Tags are a specific case. Tags always use the tagtxt attribute name.

To scope on tags leave the Operator field blank (""), like:

Tag element Json

{
	"Attribute": "tagtext",
	"Operator": "",
	"Value": "key = value"
}

Management groups are another special case. They always use the managementgroup attribute name.

The only operator they support is == and do not have a data type.

The value is the UsableId, not the Name or Id of the Management group.

Tag element Json

{
	"Attribute": "managementgroup",
	"Operator": "==",
	"Value": "40497EF0F9C344BE937E2813D22457E9"
}

When criticality is used in a scope expression the value needs to be the numerical value, not the "friendly" name seen in the UI.

Mapping between the numbers and names can be found in the database in the GlobalSettings table, row with the name "CriticalityMapping".

The default mapping can be seen below but you should double check these mappings as they might have been changed in your installation of Tachyon.