question Re: email notification to Users added or removed in OOTB field additional_assignee_list of pm_projec in SPM forum

email notification to Users added or removed in OOTB field additional_assignee_list of pm_project

silviocrive — Wed, 01 Apr 2026 14:21:15 GMT

Hi All,

I need to send email notification to Users added or removed in OOTB field additional_assignee_list of the pm_project table.

This is not OOTB capability, I would like to attend ServiceNow recommendations avoiding custumization.

Re: email notification to Users added or removed in OOTB field additional_assignee_list of pm_projec

Huynh Loc — Wed, 01 Apr 2026 14:30:42 GMT

To send email notifications when users are added or removed in the additional_assignee_list field on the pm_project table without heavy customization, follow these steps:

- Create a Business Rule to Detect Changes

Table: pm_project
When: Before or After update
Condition: current.isUpdatedField('additional_assignee_list')

Example code :

(function executeRule(current, previous /*null for before insert*/) {

if (current.isUpdatedField('additional_assignee_list')) {

var oldList = previous.getValue('additional_assignee_list') || '';

var newList = current.getValue('additional_assignee_list') || '';

var oldUsers = oldList.split(',');

var newUsers = newList.split(',');

var added = newUsers.filter(u => oldUsers.indexOf(u) === -1);

var removed = oldUsers.filter(u => newUsers.indexOf(u) === -1);

g_scratchpad.added = added.join(',');

g_scratchpad.removed = removed.join(',');

gs.eventQueue('project.additional_assignee.changed', current, g_scratchpad.added, g_scratchpad.removed);

}

})(current, previous);

Create Event & Notification

Define an Event:
- Name: project.additional_assignee.changed
- Table: pm_project
Create an Email Notification:
- When to send: Event is fired
- Event name: project.additional_assignee.changed
- Who will receive: Use event.parm1 and/or parm2 or define logic in the Business Rule
- Customize your email using ${event.parm1} and ${event.parm2} data pills

A similar use case and recommended approach is discussed in the ServiceNow Community blog below. Please review it for additional context and validation:

https://www.servicenow.com/community/itsm-forum/sending-notifications-only-to-newly-added-users-in-quot/m-p/3154678

If this response was helpful, please consider marking it as Correct and Helpful. You may mark more than one reply as an accepted solution.

Re: email notification to Users added or removed in OOTB field additional_assignee_list of pm_projec

Tanushree Maiti — Wed, 01 Apr 2026 14:44:02 GMT

Hi @silviocrive

Refer : Sending Notifications Only to Newly Added Users in "Additional Assignee List" for Change Requests // same thing , you need to change the table

Re: email notification to Users added or removed in OOTB field additional_assignee_list of pm_projec

Saiprasad_V — Wed, 01 Apr 2026 15:05:10 GMT

We can handle this without heavy customization by using Flow Designer, which is the recommended approach in ServiceNow.

We can create a flow on the pm_project table with a trigger on update and check if the Additional Assignee LIst field changes. Then, we can identify who was added or removed and send email notifications accordingly using the Send Email action.