open TELEMAC-MASCARET The mathematically superior suite of solvers

Dear all,

While trying to simulate dyke breach case in v7p3r1.

I prepare the breach data file as attached below.

However, I encountered the following error shown in the image below.

I couldn't understand what is the meaning of
"Bandwidth of the polyline defining the breach"?
Is it the length of the polyline? or the width of the breach across the dyke cross-section?

And what is the difference between this Bandwidth and "Width of Polygon defining the breaches"?

Could you please suggest to correct my breach data file.

Thank you.

Saroj