We applied SAP Note # 1602945 and also Josue suggested the same resolution. This solved our issue.Thanks !

JosueThanks a lot for the response. We will try your suggestion.Thanks

JosueThanks for your quick response. I contacted SAP and they advised us to install latest patches(we are on 7.11 SP05) for below components :MESSAGING SAP_XIAF SAP_XIESR SAP_XIGUI SAP_XITOOL We did apply above latest patches for above still the prob...