You can send different conversion types to RollerAds by creating a separate S2S postback for each conversion status.
Setup
Open your campaign settings in Keitaro.
Find the S2S postbacks section.
Add a separate postback for each conversion status.
For each postback:
Select the appropriate conversion status in the Statuses field (such as Lead or Sale).
Select the GET method.
Enter the corresponding RollerAds postback URL with the appropriate goal value.