Returns P.O handled in WM.(Movement type-161)

Hi,

Iam trying to use the movement type 161 in WM. When i do the GR with reference to the P.O, iam getting an error that storage bin doesnot exist. I have maintained the source storage bin XXX for the interim storage type 902 for the movement type 161. To the best of my knowledge i have checked all the entries and could not figure it out.

Any help is highly appreciated.