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common Graphical Workflow requirement in Service-now is to tell the workflow to wait for some trigger before continuing. The ‘Wait For condition’ activity is available out-of-box and is very simple to configure. Usually when working with Service Requests or Change Requests I am asked how you can set up the workflow to wait for completion of all associated tasks before closing the Request Item or Change Request ticket. This can be easily accomplished by using a script in your ‘Wait For condition’ activity to query for any associated tasks that are still marked as ‘Active’. If the task is marked as ‘Active’ then it hasn’t been closed yet and the workflow should wait for that closure. Here are some sample scripts that I’ve used before to wait for task completion on both Request Items and Change Requests.
The scripts below can be pasted into the ‘Wait For condition’ activity script field as shown here…
Request Item – Wait for Closure of All Tasks:
var rec = new GlideRecord('sc_task');
rec.addQuery('request_item', current.sys_id);
rec.addQuery('active', true);
rec.query();
if(rec.hasNext()){
answer = false;
}
else{
//Continue
answer = true;
}
Request Item – Wait for Closure of Workflow-generated Tasks:
var rec = new GlideRecord('sc_task');
rec.addQuery('request_item', current.sys_id);
rec.addNotNullQuery('wf_activity');
rec.addQuery('active', true);
rec.query();
if(rec.hasNext()){
answer = false;
}
else{
//Continue
answer = true;
}
Change Request – Wait for Closure of All Tasks:
var rec = new GlideRecord('change_task');
rec.addQuery('change_request', current.sys_id);
rec.addQuery('active', true);
rec.query();
if(rec.hasNext()){
answer = false;
}
else{
//Continue
answer = true;
}
Change Request – Wait for Closure of Workflow-generated Tasks:
var rec = new GlideRecord('change_task');
rec.addQuery('change_request', current.sys_id);
rec.addNotNullQuery('wf_activity');
rec.addQuery('active', true);
rec.query();
if(rec.hasNext()){
answer = false;
}
else{
//Continue
answer = true;
}