TUFLOW Message 1221
TUFLOW Message 
ERROR 1221 - No Manning's n value found for Material ",a," at WLLp point.
Alternate Message 
NA
Message Type 
ERROR
Description 
Material value defined in WLL point is not defined in the TUFLOW materials file (.tmf).
Suggestions 
Ensure the material value assigned to WLLp is correct and material number is defined in the materials file (Read Materials File == ).
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