Error in Communication Channel

Hello all,

I installed PI7.0 Newely. I done sample scenario of file to file. in sxmb_moni black flag showing but in communication channel the following error is showing.

Error Attempt to delete file "d:\sample.xml" after processing failed. Retry

remaining columns showing success in communication channel monitoring. I put Processing Mode Delete under processing parameters. But file is not deleted in the concerned folder. i used NFS. What is the problem. Plz suggest me.

Thanks

San