BW - Problem with iDOC transfer after 7.0X -> 7.31 upgrade

Hello,

We performed an upgrade to our BW 7.01 environment. We followed the ASU recomendations prior and after the upgrade. Everything seems to be OK except for the fact that we are unable to retrieve data from the source systems. The connections are OK and "Activate" and "Check" give positive feedback.

I've attached the error we're receiving in the BW monitor regarding the process.

Any ideas of what can be wrong?

I've double checked most of the BW configuration, base on another 7.31 environment, and everything seems to be setup OK.

Regards,