Not able to see the data source

Hi Experts,

I'm unable to see the data source once i click on "display data source" in RSA6 or if i double click on data source. Whenever i do this activity it is leading to the below screen(display log) I can see the below error in display logs screen

data/time/user

Problem class very important

Message text:

generating data source 2LIS_02_ITM

The even numbered length of the DEC field MABW can lead to problems

Event with errors Extract in data source 2LIS_02_ITM

Please advice what do i need to do

Thanks & Regards,

amarnath