Activity Custom Field Limit in Dev Org - Answers - Salesforce Trailblazer Community
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Yue TanYue Tan 

Activity Custom Field Limit in Dev Org

I tried to add more activity custom fields in my dev org (have 26 custom fields currently), but got this message: 

Custom Field Limit Exceeded
Either you or your organization has exceeded the maximum number of custom fields allowed in the system. Please contact your administrator for more information. 

I thought I can have up to 100 custom fields for activity.

Anyone knows how to increase this limit? Thanks.
Swayam ChoukseySwayam Chouksey
Hi Yue,

Looks like your org has different limit for Activity. You need to create a case with Salesforce to increase limit.  (

Also Please vote for this Idea as well

Hope this helps !!
Jeff MayJeff May
You can see the Limit in your org by looking at the Limits page under the Setup > Customize for the object you are interested in.
Yue TanYue Tan
Hi Swayam, 

Thanks! I just created a case. 
Yue TanYue Tan
Hi Jeff,

Thanks! I checked the limit and it says I can have 20 custom fields for activity.
Omar RodriguezOmar Rodriguez
The limit is 100.   Probably you need to request a Physical Delete to SF Support if you deleted many custom fields.
Zane PerryZane Perry
@Yue,  Professional Edition limits 20 custom objects on Activity.  See page 12 on
increase a limit
How to increase my custom object pls tell me the steps to complete the course