Cross section Error

Dear Friends,

I am getting below mentioned error while running MIKE 11. Can you suggest me, how to cover come this error.

ERROR: Unexpected exception occurred. Please see log file for details. Exception message: Error reading xns11 file: ..\Model Present Condition\Present_Condition.xns11
Exception: Error reading xns11 file: ..\Model Present Condition\Present_Condition.xns11:
                    Cross section at reach: 'CNN_C', topo-id: '17', chainage: 0:
                    UserDefinedLevels: Levels are not strictly monotonically increasing

Hi,

You need to check the mentioned cross section: in the 'Processed data' view, it seems that you've computed the processed data on user-defined levels, but that these levels are not increasing (which they should do).

Best regards,
Mathieu