Hi Pradeep,
Follow the sapnote to register the BO
1018839 - Registering in the System Landscape Directory using sldreg
Then run this command , to push the data to SLD
saposcol -b | sldreg -connectfile <Installtion Directory>:\usr\sap\<SID>\SYS\global\slddest.cfg -stdin –oldtransferdtd
Use the below sapnote to analyze the sldreg issues
1382650 - Error analysis during system registration using sldreg
With Regards
Ashutosh Chaturvedi