I want to relate an outbound email message to a different Opportunity. EmailMessage.RelatedToId holds the Id of the Opportunity for which it's related to. I attempted to simply change the RelatedToId on the EmailMessage using Execute Anonymous but it doesn't work. Getting error "System.SObjectException: Field is not writeable: EmailMessage.RelatedToId".
 

EmailMessage msg=[SELECT Id, RelatedToId FROM EmailMessage WHERE Id = '02so000000I7rXuAAJ'];
msg.RelatedToId='006o000000NJzV1AAL';
Update msg;

Is there another method of updating this field?
 

Hi all, Any hints on how to get person accounts made available?

 

From the documentation I've read it looks like I need to request it from SF directly, but for the life of me I can't seem to locate a method to make that request.

 

Thanks

-M