We are trying to represent issuer level recommendations using RIXML. We have about 5 possible recommendation types all internal to our company. While I can specify that the rating is 'PublisherDefined' where can I specify the type of rating i.e. CDS/Fundamental Outlook etc?

For a publisher-defined rating, you would specify rating attribute as "PublisherDefined", and the rating value as the text value of the Rating.PublisherDefinedValue element. The Rating.Description element can be used for further commentary on the meaning of the rating. For example:

<Issuer ... >
<Rating rating="PublisherDefined" ... >
<PublisherDefinedValue>
MyBuy
</PublisherDefinedValue>
<Description>
CDS/Fundamental Outlook, etc.
</Description>
...
</Rating>
...
</Issuer>

I hope that's helpful. Best regards...