It should not affect multi site origin.  Those origins have to be created 
individually as servers in the server table, and are used as parents not origin 
fields. The origin field is still set in the delivery service itself.  As long 
as the origin fqdn is unique it should not affect MSO. 

> On Dec 17, 2018, at 12:59 PM, Fieck, Brennan <[email protected]> 
> wrote:
> 
> As some of you may be aware, `parent.config` files generated by Traffic Ops 
> can vary wildly when an origin is assigned to multiple Delivery Services. 
> This results in undefined behavior. I'm told that the conflict only happens 
> when two Delivery Services with different "topology requirements" use the 
> same origin, whatever that means (content routing type?). Regardless, the 
> issue should be addressed. The obvious solution is to put in place a database 
> constraint that prevents an origin from being assigned to more that one 
> Delivery Service with API checks in place that would provide helpful error 
> messages when an attempt is made to violate the constraint. However, would 
> that mess with things like Multi-Site Origin? Or is it just not viable for 
> some other reason? If it is a good solution, I'm prepared to work on a fix 
> that utilizes it.

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