Dear GMS users, I have prepared and entered my borehole data into the GMS to generate stratigraphy of my study area. I have also created and filled required cross sections using GMS. Now, I want to snap the cross sections to the top surface of the study area using TIN. But, I have faced the error as “Top Arc elevations on cross section (s): …. have been changed to prevent intersection of arcs” and GMS cannot finish the process. I stuck in this step and any idea / comments would be really appreciated. Thank you very much.