Logical system has not been assigned to any business grp

We have converted R/3 system (4.6c) from EBCDIC to ASCII. R/3 is integrated with SCM 5.0. Everything was fine before conversion. After Conversion, in SCM qRFC Monitor Inbound Queue (TCODE = SMQ2), we are getting the

error "Logical system &##ä<+è### has not been assigned to any business

system gr".

Error Message no. SR053

The problem happens because the logical system has strange value

in the inbound queues.

Preblem still persists even after performing various things:

Re-created and Activated the CIF Integration Models

Checked all settings in both systems

Ran CCR

Checked table CIFLOOKU

Any ideas are highly appreciated? Thanks