SMQ2 Error in ECC : ThISend: bad tm type / connection closed (no data)

Hi Guru's,

I am working on scenario FTP ---> PI ---> Proxy.

Messages are processed successfully from PI and when i checked in ECC sxmb_moni they are in schedule status(Green flag).

In SMQ2 of ECC i found messages got struck in que's with below error message :

ThISend: bad tm type / connection closed (no data).

I tried to unlock the que's but its not working.

When i tried to check the proxy in SPROXY with same xml data, its updating properly.

But i am getting the message : "Successful with empty result - commit may be required in ECC 6".

So , Any one suggest why the messages struck up in the ECC que.

Thanks in advance for your time and quick help.

Regards

Suresh