In the activity settings you can turn on or off Allow Users to Relate Multiple Contacts to Tasks and Events. But how can I check this in my Apex code? I thought it might be in the Organization table but I dont see anything there.

1 Answer 1


Navigate to Setup > Customize > Activities > Activity Settings.

The last checkbox in the list is called Allow Users to Relate Multiple Contacts to Tasks and Events. Helptext:

Enabling this feature lets users relate up to 50 contacts to a task or event (except a recurring task or event).

From Apex, you can inspect the global describe to see if a specific sObjectType is supported:

Boolean isTaskRelationEnabled = Schema.getGlobalDescribe().containsKey('TaskRelation');
  • I can see that alright when I navigate there. But if Im doing apex code that will use the TaskRelation table then that table will only exist if that checkbox is checked. So I need to be able to check if it is on or off from Apex Jun 20, 2016 at 20:53
  • @discodowney Updated my answer. It didn't look like you necessarily needed a programmatic solution at first glance.
    – Adrian Larson
    Jun 20, 2016 at 20:55
  • 1
    Cheers Adrian. Works perfectly. Jun 20, 2016 at 20:59
  • Will above query work for Event also ? I can see EventRelation object is already available even multiple contact setting is disabled.
    – San
    Nov 18, 2019 at 9:48

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