Hi All,
I was able to sort it out....

There is a setting in the interface tab....
You need to have a relationship between the 2 MBO's.............
Under Integration
1. Select the interface for which you want to check the integrity.
2. In inbound processing rules click new row under MBO processing rules.
3. Give the rule name and the type of check (Ex: Skip)
4. Click add\modify conditions button (You will get a window)
5. Under conditions click new row and below in the XML Field section click new row.
6. select the field which you want to check and set the evaluating condition from the list.
7. In the radio buttons click on MBO
8. Give the mbo name with which you want to check and the relationship between the two MBOs and select the field of the related MBO
9. Click ok and save..... Thats all... (MEA will do the rest....)
If there is any error occurs during check then it will be displayed in the logs and the xml file of the data which could not be inserted will be in the MEA GLOBAL folder under the error folder......
Hope this info helps others.....
Cheers....
VIJET