OS Instance Licenses needed for Nodes coming from BSM/RTSM

we have BSM 9.23 with EventFoundation . We have OMW Agents and SAMPoints for all Monitored Nodes and integrated everything with BSM/OMi. We have also an HP uCMDB and want to integrate this with our BSM System and do some discovery to enhance the CI-Information coming from RTSM.

We are not shure if we need OS Instanc Licenses for those nodes coming from BSM. We assume that we don't need addtional licenses, but we need to be shure. Thanks for clarification.