Hello Silvia,
I recommend you to please keep the field blank for now. As our representative will take a look at the request and accordingly setup the integration for you.
I am just adding details around the ID sync URL for later reference (Setup User ID sync )
Audience Manager ID sync URL
http://dpm.demdex.net/ibs:dpid=[vendor_id]&dpuuid=[vendor_uuid]&redir=[redirect_URL]
Where,
vendor_id = Required - Audience Manager Partner Identifer - You will receive your vendor ID after you submit the integration request form in Step 5: Complete an integration request
vendor_uuid = Required - Partner Unique User Identifier - This must be replaced by your user id/cookie id.
URL (Percent) Encoded representation of your Unique User ID. In addition to encoding reserved ASCII characters, any non-ASCII characters should be percent encoded based on the UTF-8 character encoding table.
For more information, see the URL Encode/Decode Online website.
redirec_URL= Optional - Partner ID sync URL with ${DD_UUID} as the macro for Audience Manager User/Cookie ID. This is only required if the Partner wants to receive the Audience manager User/Cookie ID.
An encoded URL redirect with the macro ${DD_UUID} embedded within it.
Note: Added only when the content provider initiates the call.