Hi Thomas, yes, it is a hint for wrong OSM data, but may also just be caused by the lower precision used in mkgmap. When I see that message I use JOSM, load the file for which the messages was created and check the given area. Typically there are two barrier=* or highway=* nodes at the same place, which is an OSM data error. Next step would be to check if the error still exists in the OSM database. In the current data I see no such problem around 56.835467 37.404949. Maybe it was already fixed. If this didn't help please upload the corresponding input file to https://files.mkgmap.org.uk/ Gerd ________________________________________ Von: mkgmap-dev <mkgmap-dev-bounces@lists.mkgmap.org.uk> im Auftrag von Thomas Morgenstern <webmaster@img2ms.de> Gesendet: Samstag, 1. Mai 2021 08:56 An: Development list for mkgmap Betreff: [mkgmap-dev] found multiple points with equal coord..... Hi , yesterday mkgmap r4587 gives me following message : 'found multiple points with equal coord as CoordPOI at 56.835467 37.404949....... The map seems okay. What shell I do with this message ?. Is this meassage only a hint for incorrect data ? Or what else ? thomas