How to Delete a Custom Field from a Portal in Zoho Projects Resolution Click the Gear Icon in the upper-right corner of the top navigation band.Navigate to Customization > Layouts and Fields > Tasks > Fields.Hover over the field you would like to delete.Click the Trash Icon.Deleting a custom field will affect the associated tasks.The data stored in the field will be lost.Confirm your action. Note:Deleting a field from a portal will permanently delete it from the database.If a field is associated with more than 1000 tasks you will not be able to delete it. Zoho Projects Request Support