Hopefully one of you have a workaround for this.
In CRM I have a couple of "lookups" on the Lead entity. I have created Smart Campaigns in Marketo so I can use custom fields to "normalize" this GUIDS to text fields.
The problem here is that one of those lookups are the countries. So I cant create a Smart Campaign with more than 247 choices to normalize each GUID to a single text field because it hangs. After the 50th choice is a pain to continue on that, so another option is to create a Webhook which will be triggered each time the Country GUID changes.
The thing is that I have no idea on creating those. I imagine creating a WCF and somehow querying from there to the CRM and returning the text name to Marketo in JSON. But that is new to me and would be nice if anyone has something like that already done.