This KBA provides configuration steps for RZ70(SLD_UC and SLD_NUC RFCs), gateway security and SLD for an ABAP managed system to be able to reach SLD.
The RZ70 configuration via http is not discussed here, the SAP Note 2188401 provides details about it.
SAP NetWeaver All versions
'Error when opening an RFC connection (CPIC-CALL: 'ThSAPOCMINIT', communication r', Connection refused SLD_UC SLD_NUC denied 748, internal error, session terminated, TP_REG_ACCESS_DENIED, 748 RC=748, access denied, gateway client table, re-register, RZ70 , KBA , BC-CCM-SLD , System Landscape Directory / Component Repository , BC-CST-GW , Gateway/CPIC , BC-CCM-SLD-ABA , System Landscape Directory ABAP Connectivity , BC-CCM-SLD-JAV , System Landscape Directory Java Client & Server , Problem
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