The guardrail only shows if I turn on the 3D reference of the corridor.
It is displaying on my dynamic cross section and template.I already check my levels and they are on.
Any suggestions?
If the guardrail is being modelled by defining a point in a template and using a 3D linestyle via the feature definition assigned to the point then it would display in the 3D model. If the feature definition defines an element template for display of a cell in the dynamic cross section view then that will also display. 2D geometry is only displayed from template points that represent the top mesh of the corridor and have their "Create Template Geometry" setting in their feature definition set to true.