Connecting Systems to the SLD 
You configure systems that are installed in your system landscape to periodically register themselves at the SLD.
Depending on the type of system, there are the following ways to send system data to the SLD.
An ABAP-based SLD data supplier uses an RFC connection to send data about an AS ABAP system to the SLD bridge by means of a gateway.
Note
The ABAP-based SLD data supplier (transaction RZ70) is available for all SAP systems as of SAP Basis release 4.0B.
For more information, see Connecting AS ABAP Systems to the SLD.
A Java EE based SLD data supplier uses HTTP to send data about an AS Java system to the SLD.
Note
The Java EE based SLD data supplier is available for all AS Java systems as of SAP NetWeaver release 6.40.
For more information, see Connecting AS Java Systems to the SLD.
Systems that are neither ABAP nor Java EE based use the sldreg executable to send data to the SLD.
For more information, see Connecting Other SAP Systems to the SLD.