how to trigger assignment rules from Business rule

[BasavaK]

I want to trigger assignment data lookups rule from business rule 
condition : i have 5 assignment data lookups rules when incident priority is not 1 then assignment data lookups rule should trigger

[Chris Yang]

Assignment rule automatically trigger when the record is inserted/updated, AND assigned to and assignment group are both empty.

See run condition in official docs
https://docs.servicenow.com/csh?topicname=c_AssignmentRulesModule.html&version=latest

[ShubhamGarg · Accepted solution]

Hello @BasavaK ,

Assignment rules does not get triggered using business rule. It triggers automatically as soon as any table record is created in order of execution & conditions defined in assignment rules.

Reference documentation - Assignment rules module 

The Assignment rules module allows you to automatically set a value in the assigned_to and assignment_group fields when a set of conditions occurs.

An assignment rule must also meet these additional criteria to run:

• The task record has been created or updated. Assignment rules do not apply to unsaved changes on a form.
• The task record must be unassigned. The record cannot have an existing value for either the assigned_to or assignment_group fields. Assignment rules cannot overwrite existing assignments (including assignments set by a default value or a previously run assignment rule).
• The assignment rule is the first rule that matches the table and conditions. If more than one assignment rule matches the conditions, only the rule with the lowest order value runs.

If my response helps you in any way, kindly mark this as Accepted Solution/Helpful and help in closing this thread.

Regards,

Shubham