Integration between SAP GRC embedded on S/4Hana

Hello
We have a problem to integrate SAP GRC in our client environment. Our client has SAP GRC embedded on S/4Hana environment and all their actions are done using screens on that integration. They want to do the management of SAP GRC and SAP S/4 that are done in this environment. We tried to use the SAP GRC connector so we could manage SAP S/4 Hana, but our client does not has SOMANAGER to extract the necessary urls. Their time said they need to create a webservice to get this urls, but we do not know if it is necessary to get them. We do not know also if this problem can be resolved with SAP Direct connector, because we don“t know if all necessary managements of S/4 can be made with SAP direct even though it has GRC embedded in it. So, do anyone knows if is necessary to create a webservices to get this urls? Or if using the SAP Direct conector can solve the problem? Thanks