If I understand correctly, the problem is that there is no way in the xml file that you import by UC to specifiy the UUID field
If so, you may be able to work around like this:
In my example, I wanted to define the significance of a relationship, which is not possible by default with UniversalConnector
In the XML file, use an existing field and attach the extra information you want to it.
<property tag="associationType" value="IsAffectedBy,100" />
Here I added ",100" for the Significance, in your case it could be ",123-456-789" or whatever for the UID
Edit the UC policy:
D:\Program Files (x86)\CA\SOI\resources\Core\Catalogpolicy\universal_policy.xml
below
<EventClass name="GENERIC_CONNECTOR_RELATIONSHIP_EVENT" extends="GENERIC_CONNECTOR_CI_EVENT">
insert
<Parse>
<Field input="associationType" output="associationType,Significance" pattern="^(.*?),([0-9]+)$" />
</Parse>
this will parse the content of the input-field, "IsAffectedBy,100" , split it in two parts separated by the comma, and assig these two values to the two fileds defined by output=..., in my case 'AssociationType' and 'Significance'
You will have to replace it by output="associationType,UUID" or whatever the correct fieldname for your SDP UUID is
Cheers Jan