I have a set of geometries that represent different surveying polygons, for each set I have certain features that are exactly the same geometry wise, but have a different value in a unique identifier I have created in the attribute table to identify each survey separately (so, for example, one polygon that is right next to another will share a common vertex point, and in that spot there will be two different points with the same geometry but a different value on the attribute table identifier field).

When I'm checking for topology errors I always look for overlapping features, but I find myself getting multiple "fake" errors due to having to place 2 points in the same spot.

Is there a way to make it so that the topology rules check the attribute table for features that overlap, and only considers it errors when they have the same value in the identifier column?.

  • 1
    Have you explored the Find Identical tool? You can test on geometry and attributes
    – Hornbydd
    Jun 12, 2023 at 20:16
  • @Hornbydd This does work to identify If I have repeated by mistake the same category on a given point, but when I run the topology it will be marked as an error regardless. However if you use the tool you mention to identify that indeed every point with equal geometry has a different identifier, and filter for unique geometries only, that would basically be the equivalent of what i'm trying to achieve. If you wanna make it an official answer I will consider it resolved with that, thanks! Jun 12, 2023 at 20:52
  • I am not quite following this. Topology runs against every record, ignoring filters. After you get errors, you can select the records and do additional filtering. Then, mark some as exceptions. Many topology errors are not true errors (or "fake" as you say).
    – danak
    Jun 14, 2023 at 16:04

1 Answer 1


Without any other apparent smooth way of acomplishing this, a good way to solve it is to use the Find Identical tool In conjunction with the Delete Identifcal tool. So the workflow is to essentially:

  1. Check whether or not there's features with the same geometry and same value for the identification field (In my case I have an integer that represents the ID of the survey in my worlkflow based on location and date) with Find Identical.
  2. Fix any errors you've found so that any features with the same geometries have a different identifier
  3. Run the Delete Identical to delete duplicate geometries.
  4. Run topology rules as usual

That way you're not getting any potential errors from geometries that are intentionally the same (and thus, overlap, intersect, and so on).

This was basically answered by another user in the comments before but since he doesn't seem to want to answer I figured I'd do so.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.