MX Ignoring points with in close vicinity during triangulation.

Hi,

I have created curb line with an horizontal offset of only 0.0001m offset and vertical offset of 0.15m, however when I am my triangulating design model it is ignoring kerb line which is exactly 0.15m high and 0.0001m offset. Warning I am getting is ignoring duplicate point on string XXXX.

How I can include this curb line in my triangulation?

Early answer will be highly appreciated.

Thanks