BW sourcesystem connection is working with the logical systemname.
A connection between two systems with the same logical systemname will not work.
Includes all connection between BW and a sourcesystem. It is not recommended to change the table manually. The important fields are the following
SLOGSYS = logical sytemname of the sending system according to table T000
RLOGSYS = logical systemname of the receiving system according to table T000
Remark: for the myself connection SLOGSYS and RLOGSYS are the same
OBJSTAT = should be A
BIDOCTYP = generated by system in case you create a connection
TSPREFIX = those two letters are part of the field BIDOCTYP. The prefix which identifies the sourcesystem connection are used in several sourcesystem dependent objects and therefore it is not recommended to change the entry manually.