Our SAP S/4 HANA system works fine previously but suddenly not work. HANA DB is installed on SLES 15 SP 2 and started properly. S/4 HANA is installed on windows server 2019. When start systems from sapmmc, ASCS01 system is started, but D00 system failed. We didn't install license for SLES, is this the reason? Otherwise help us trouble shoot this issue and start SAP systems.