error while importing tr

hi experts,

i am facing the below error while i try 2 import a transport request. not getting why it is coming.

please help.

Main import

Transport request : BWDK900275

System : BPS

tp path : tp

Version and release: 372.04.40 701

R3TRCUBE0PS_C021 was repaired in this system

R3TRCUBE0PS_C031 was repaired in this system

R3TRCUBE0PS_C041 was repaired in this system

R3TRCUBE0PS_C081 was repaired in this system

R3TRMPRO0PS_C051 was repaired in this system

R3TRMPRO0PS_C061 was repaired in this system

Main import

End date and time : 20111123113500

Ended with return code: ===> 8 <===

thanks...