Update template.md

Author: joeynmq

src/engage/content/email/template.md

@@ -55,7 +55,6 @@ You can send test emails before you include a template in marketing campaigns.
 
 {% endcomment %}
 
-
 > info ""
 > You can also test email templates directly from a [Send an Email step](/docs/engage/journeys/build-journey/#send-an-email) in Journeys.
 
@@ -121,9 +120,14 @@ The manage preference link lets your customers opt in and out of email groups on
 
 For more information, see [subscription groups](/docs/engage/user-subscriptions/subscription-groups/).
 
+## Known limitations
+
+### Arrays and Objects are not supported in Broadcasts
+At this time, profile traits in object and array datatypes are not supported in [Broadcasts](/docs/engage/campaigns/broadcasts/), however you can use them in [Journeys](/docs/engage/journeys/).
+
 ## Next steps
 
 - View some [email deliverability tips and tricks](https://docs.sendgrid.com/ui/sending-email/deliverability){:target="blank"} from SendGrid.
 
 - You can also use the Templates screen in Engage to [build SMS templates](/docs/engage/content/sms/template/).
- 
+