Related question: Is there a list somewhere with all the other invisible fields that might be valuable to know about? :)
10 respostas
The CreatedBy field shows both who and when on the page layout so that is an option. CreatedDate is not a field that is exposed in page layouts but you could create a custom CreatedDate field on Opportunity that simply references the standard CreatedDate field and then add that to page layouts.
Of note CreatedDate does show up in reports but not list views so if you create a custom field users will see two CreatedDate fields when running reports. Just something to be aware of. The field type for CreatedDate is what is called a system field. Here is a link to all the system fields currently available: https://developer.salesforce.com/docs/atlas.en-us.api.meta/api/system_fields.htm
