HEC-GeoHMS Error

[Sayeed]

Hi,
I was trying to generate CN grid using Land_soil_Uninion Polygon shape file and CNLookup Table. I get following error message "Cannot add the fields in (Layer=Land_Soil_Unio) CN=1,Type=3, MustExist=0.

Could you please help me to remove this error.

sincerely
Sayeed

[shahab-m]

Hi Sayeed,
I've got the exact error message as you had. I wonder if you could fix the problem? If so, could you please let me know how you did that?!

Regards,
/Shahab