It is a limitation is by design that these run configurations cannot be created in Rule Designers downloads from IBM Marketplace.
For the Test Decision Operation cofiguration to run, it need jars that are in executionserver/lib folder, so it will need Decision Server to be installed using IBM Installation Manager.
As a workaround, you should download ODM Decision Server installer from Passport advantage and install RD using IBM IM.
If you want this feature to be availabe in RD for the cloud, please open a RFE so our product offering team will consider it when planning for future releases of ODM. https://dba.ideas.aha.io/
#OperationalDecisionManager(ODM)#Support#SupportMigration