Recipient port and Message function are missing

Hi All,

I found that one of my inbound idoc recipient port and message function is missing .

The sender Partner Type is KU. I have check everything but still no clue on the error.

Strangely there was only 1 idoc recipient port and message function is missing out of 170 idoc on that day.

Any suggestion ?

thanks and best regards,

Derrick.