TUFLOW Message 1068
TUFLOW Message 
ERROR 1068 - First column values in cross-section data not in ascending order.  Incorrect values are:
Alternate Message 
NA
Message Type 
ERROR
Description 
The data in the first column of a cross-section is not unique or in ascending order. For a XZ (offset - elevation), the X data (offset) should be unique and in ascending order.  The same applies to all cross-section types, e.g. for a HW (height - width) section, the height values should be increasing.
Suggestions 
Check data, remove duplicate values and sort by first column.
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