--- title: How to Fix Duplicate Survey Points description: "# Fixing Duplicate Survey Points After Import (Verification Warning) This guide covers a *different* workflow from the [Survey Points During Import](https://mes100.com/docs/survey-points-import-review/). It applies against survey points that are **already in the project** (whether they were imported previously, or resolved and…" url: "https://mes100.com/docs/how-to-fix-duplicate-survey-points/" updated: "2026-09-02" category: Earthwork / Input / Survey Points and Soil Info --- # How to Fix Duplicate Survey Points # Fixing Duplicate Survey Points After Import (Verification Warning) This guide covers a *different* workflow from the [Survey Points During Import](https://mes100.com/docs/survey-points-import-review/). It applies against survey points that are **already in the project** (whether they were imported previously, or resolved and committed via the import review panel), and is triggered from a **verification warning** rather than shown automatically during import. --- # Where the warning shows up Terrain/mesh calculations continuously check your survey points for problems. If a survey point group has two or more points sharing the same X/Y location (to 6 decimal places), a warning appears in the **Verification** panel: > “ contains N duplicate X/Y survey point cluster(s); duplicate survey points can affect the accuracy of your cutfill results, so need to be reviewed” If the **Verification** panel isn’t currently open, enable it from the **View** group in the ribbon (**Verification**). ![1 Verification Warning](https://i0.wp.com/mes100.com/wp-content/uploads/2026/09/1-Verification-Warning.png?w=1080&ssl=1) > **Note:** The “**Auto Fix**” button in the same panel handles a different set of fixable issues. In Earthwork Module, the autofix includes platform overlaps, non planar platforms and etc. See [here](https://mes100.com/docs/platform-auto-fix-feature/) for further information. It does **not** currently support duplicate survey points. To resolve duplicate survey points, refer to verification warning row as described in the next section. --- # Opening the review dialog **Right-click** the warning row. This opens the **Degenerated Survey Points Review** dialog. ![2 RightClickWarningMessage](https://i0.wp.com/mes100.com/wp-content/uploads/2026/09/2-RightClickWarningMessage.png?w=1080&ssl=1) ![2-1 OpenReviewDegeneratedSurveyPoints](https://i0.wp.com/mes100.com/wp-content/uploads/2026/09/2-1-OpenReviewDegeneratedSurveyPoints.png?w=1080&ssl=1) --- # Using the dialog The dialog has two grids and a row of action buttons. ## Duplicate X/Y Clusters (top grid) Each row represents survey cluster showing X/Y location, survey point count, minimum and maximum Z-elevation, and elevation difference for each cluster. Click a row and click **Highlight Selected Cluster** button to highlight the survey cluster in the Input screen. (Double-click the row also perform the same action). ![3 Highlight Survey Cluster in the Input Screen](https://i0.wp.com/mes100.com/wp-content/uploads/2026/09/3-Highlight-Survey-Cluster-in-the-Input-Screen.png?w=1080&ssl=1) ## Survey Points in Selected Cluster (bottom grid) Every individual point in the currently selected cluster, with a **Delete** checkbox per row (used by the **Delete Selected Points** button below), and its X/Y/Z values. ![4 Delete Selected Points](https://i0.wp.com/mes100.com/wp-content/uploads/2026/09/4-Delete-Selected-Points.png?w=1080&ssl=1) ## Action buttons | Button | Effect | | --- | --- | | **Highlight Selected Cluster** | Highlights the selected cluster | | **Delete Selected Points** | Permanently removes every point whose **Delete** checkbox is ticked in the bottom grid | | **Keep Highest Z** | Deletes every point in the selected cluster except the one with the highest elevation | | **Keep Lowest Z** | Deletes every point in the selected cluster except the one with the lowest elevation | | **Refresh** | Recomputes the cluster list from the current survey points (useful if you’ve made changes outside this dialog) | | **Close** | Closes the dialog | ![5 Action button](https://i0.wp.com/mes100.com/wp-content/uploads/2026/09/5-Action-button.png?w=1080&ssl=1) **n/b:** You can also select a single point in the bottom grid and press **Delete** on your keyboard to remove just that one point. Any deletion can be undone using the **Undo** button (or press Ctrl+Z). --- # Working through multiple clusters The dialog does not need to be closed and reopened after resolving each cluster. Once a cluster is resolved down to a single point, the top grid updates automatically. The next cluster can then be selected and resolved using the same process. Once every cluster has been resolved, the dialog shows: > *“All duplicate X/Y clusters are resolved.”* ![6 All Duplicate Clusters are Resolved](https://i0.wp.com/mes100.com/wp-content/uploads/2026/09/6-All-Duplicate-Clusters-are-Resolved.png?w=1080&ssl=1) The dialog can then be closed. The duplicate survey points verification warning is automatically cleared once all duplicate clusters have been resolved. ### *Related* [![](https://i0.wp.com/mes100.com/wp-content/uploads/2024/10/me-small.jpg?resize=100%2C100&ssl=1)](https://mes100.com/author/admin/)[Ngu Soon Hui](https://mes100.com/author/admin/) I’m the [Benevolent Dictator for Life](https://en.wikipedia.org/wiki/Benevolent_dictator_for_life) for MiTS Software cum Editor of this website. Read more [here](/about-ngu-soon-hui/). You can also contact me at soonhui@mes100.com