---
sourceDocument: Australia IT Service Management
sourceDocumentLink: https://servicenow-prod.fluidtopics.net/r/it-service-management

 Release :

    - australia

ft:locale :

    - en-US

ft:publication_title :

    - Australia IT Service Management

ft:clusterId :

    - itsm

bundleId :

    - itsm

workflow :

    - Technology


---

# Create a custom SLA condition rule

# Create a custom SLA condition rule {#ariaid-title1}

Release version: Australia  
Updated March 12, 2026  
![](https://www.servicenow.com/docs/portal-asset/ico-clock) 1 minute to read  
You can create custom SLA condition rules to determine whether an SLA should attach,
pause, complete, reattach, or cancel. SLA condition classes contain script to define
processing for an SLA condition rule. Create an SLA condition rule after the SLA condition
class is defined.

## Before you begin

Role required: admin

## Procedure

1. Define an SLA Condition Class.  
   Navigate to System DefinitionScript Includes and click New.

   Within the script in the
   SLA Condition Class, provide methods to modify one or more of the default
   SLA transitions (attach, pause, complete, reattach, cancel), defining the
   conditions for SLA processing. For example, the attach
   method defines when an SLA is created and attached to a task. The methods
   need to test a condition, referencing the condition fields on the SLA
   Definition form.
2. Create an SLA Condition Rule.
   1. Navigate to Service Level ManagementSLA Condition Rules and click New.
   2. Name the SLA Condition Rule.
   3. Select the Script Include defined above in the Class Name reference field.
   {#t_DefineANewSLAConditionRule__substeps_emh_y54_bbb}

## Example of an SLA Condition Class

For example, including the following method in an SLA Condition Class attaches the
SLA if its condition matches the SLA's `start_condition` field:  

    attach: function() {
          return (this._conditionMatches(this.sla.start_condition));
       },

The following is an example which shows the format of a script include that would
extend the SLAConditionBase class and provide methods for each of
the SLA transitions:  

    var SLAConditionLocal = Class.create();
     
    SLAConditionLocal.prototype = Object.extendsObject(SLAConditionBase, {
     
       attach: function() {
         // insert script here
       },
     
       pause: function() {
         // insert script here
       },
     
       complete: function() {
         // insert script here
       },
     
       reattach: function() {
         // insert script here
       },
     
       cancel: function() {
         // insert script here
       },
    });

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