Published on 4 November 2025

Report changes to maps or geodata

Have you noticed any changes in the area that still need to be reflected in our products? Or have you discovered an error in a map or a set of geodata? If so, please let us know via our online application – on the road via smartphone or from home.

Many notifications concern changes to the transport and road network.

To send us your suggestions for corrections to swisstopo products, all you have to do is click on a link. Typical changes include traffic diversions, new buildings, incorrect geographical names or paths which are no longer passable.Just click on map.geo.admin.ch or use the swisstopo app to report any required changes to our data.

Your messages and suggestions will help us to continually improve our maps and geodata. Thank you in advance for your valuable support. 

Enter notifications in map.geo.admin.ch

Report your suggested corrections directly from map.geo.admin.ch:

• Open map.geo.admin.ch and zoom in on the place where you have noticed a discrepancy. Then click on “Report problem” in the upper right corner of the webmap viewer.
• Select the category affected by the notification (mandatory). The category “An error in the background map” is used for observations regarding swisstopo maps and aerial images. The different message categories are explained here.
• Enter a brief description of your proposed modification in the “Comments” field (mandatory). But do not write any personal information (e.g. last name, first name) in this field.
• Indicate the location affected by the notification on the map with the symbol or line tool (optional). This is particularly important for messages relating to the background map.
• Add your email address (optional). This will enable us to contact you if we have any questions or - if you like - to send you a reply to your message. Furthermore, the email address will be used to send regular updates on the current processing status of your notifications concerning the background maps.
• Upload any files (optional) that may help us to understand your notification (e.g., a screenshot or photo of the relevant area, a GPS track in .gpx or .kml format, etc.).
• Finally, click on the “Send” button.

Enter notifications with the swisstopo app

Report your suggested corrections directly from the swisstopo app:

• Open the swisstopo app on your smartphone or tablet.
• Tap on the “Changes” tool “in the swisstopo app.
• Zoom in on the place where you have noticed a discrepancy.
• Indicate the location of the discrepancy on the map with the point or line tool (mandatory):
  a)   Point: Long press on map to set a point.
  b)   Line: Long press on map to set a point and add further points to draw a line.
• Tap on “Enter.”
• Enter a brief description of your proposed modification in the “Comments” field (mandatory). But do not write any personal information (e.g. last name, first name) in this field.
• Add your email address (optional). This will enable us to contact you if we have any questions or - if you like - to send you a reply to your message. Furthermore, the email address will be used to send you regular updates on the current processing status of notifications concerning the background maps.
• Upload any files (optional) that may help us to understand your notification (e.g., a screenshot or photo of the relevant area).
• Finally, tap on “Send”.

• Short video

Watch published notifications on map.geo.admin.ch

In the webmap viewer of the federal geoportal, notifications concerning background maps are published in the layer “Notifications for maps and geodata”. Before anybody submits a new correction request via the notification tool, they can first check if another person has already sent us the same request. If there is already a point on this topic at map.revision.admin.ch, the problem has already been sent to us and it is not necessary to report it again. This layer also appears in the swisstopo app when you activate the “Changes” tool.

Legend

Notification not yet assigned

Automatic publication of the notification in the webmap viewer. No triage has been done yet.

Notification assigned

Initial analysis of the notification within 5 working days. Notification forwarded to the relevant data owner and production group for further processing.

Erroneous information

The correction request was refused after thorough examination and will not be followed up by swisstopo. Possible reasons for this may be:

swisstopo does not include this type of information in their data because it is not part of the national survey.

The proposed correction could not be confirmed with other sources (e.g. aerial image, field inspection, external data, etc.).

The proposed correction concerns objects that are too small and do not comply with swisstopo guidelines.

The proposed correction concerns a temporary situation of an object (e.g. a destroyed road after a thunderstorm) which is not stable.

Report postponed

In order to continue the correction process, additional data (e.g., current aerial images, external data, etc.) is necessary, which swisstopo does not yet have at its disposal. The processing will be suspended until the necessary information is available.

Solved in the production system

Data have been modified in the production databases. The time it takes for the change to become visible in the products depends on the update and publication cycle of the corresponding products.

Message forwarded

Notifications concerning external basic data (e.g. hiking trail information of cantons) are forwarded to the responsible organisations. These offices carry out the next steps in the correction process. In map.geo.admin.ch, the published notification keeps the status “Message forwarded”. There will be no more change in status in the webmap Viewer.

Correction published

The correction is visible on the national map at a scale of 1:10000 and will later be integrated into other map and geodata products from swisstopo. The moment when the adjustments become visible in the other products of swisstopo depends on the update and publication cycle of the corresponding products.

FAQs

• How do I open the window to enter a notification in map.geo.admin.ch?

  Use the ““Report problem” function in map.geo.admin.ch (webmap viewer).

• Can I also use map.geo.admin.ch to report faults or problems which do not concern the background maps of swisstopo?

  Yes! There are also other reporting categories under “Report problem” that are intended for other issues. For example, if you have any questions or helpful suggestions concerning specific thematic layers in map.geo.admin.ch, or if you have detected technical problems with the federal geoportal or geoservices, you can also send us these and other notifications. The different reporting categories are explained here. But the process for handling notifications about background maps is different to other report categories. The publication of the notification, the various processing statuses, and the automatic message to senders when the status changes are only provided for notifications in the category “An error in the background map”. In the swisstopo app, there is no category option.

• What should I write in the “Comments” field?

  Please describe your suggested change or correction. This is a mandatory field. Its content will be published in the webmap viewer later on. Please limit your comments to a brief description of the facts.

• What should I not write in the «Comments» field?

  The text in the “Comments” field will be published in the webmap viewer later on. Please do not include any personal details or statements in this field that you do not wish to have published on the Internet. This field is also not the right place for providing location addresses or coordinates. Please indicate the relevant object directly on the map.

• Why should I mark the location of a suggested change on the map?

  This helps us identify the corresponding location. It also simplifies our interpretation of your message and our search for the object in question. Only reports that include details of the location can be published in the webmap viewer.

• Can I upload additional material as supplementary information?

  Yes. You can attach additional files via the “Upload” field. Photos, brochures, text excerpts or GPS tracks are useful documentation. GPS tracks in .gpx or .kml format can only be uploaded on map.geo.admin.ch. Unfortunately, this is not possible in the swisstopo app. It currently only supports image files.

• Do I have to provide my e-mail address?

  No. Providing your e-mail address is optional. We only use your email address to confirm receipt of your report, to contact you if we have any questions or to send you a response to your message if you wish. We will also use the email address to inform you of any changes to the processing status of your notification.

• What happens to my notification?

  If you send us a notification in the category “An error in the background map” and add a location geometry in the webmap viewer, your notification will be published on map.geo.admin.ch as a point in the layer “Notifications for maps and geodata”. Specialists will then evaluate your request and integrate it into a predefined processing workflow. This workflow contains different processing statuses. These are briefly explained in the legend above. The color of the dots in the layer “Notifications for maps and geodata” shows you the current status of your notification. If you provided an email address when you submitted your notification, you will also be informed of any changes to the processing status by email. During this correction process, our specialists implement the necessary modifications in the affected production systems. Finally, the corrections appear in the corresponding products, such as the national maps.

• How long does it take before my notification is reflected in the applicable product?

  The publication of corrected data depends on the updating and publication cycles of the various swisstopo products. Further information on the update intervals can be found in the corresponding product web pages.
  
  Corrections in the map first appear in the national map at a scale of 1:10000. This online map is updated once a year with the most recent data. The 1:10000 national map is a background map integrated into map.geo.admin.ch and the swisstopo app and is also available as WMS or WMTS. This map is the most detailed map of swisstopo and appears in the webmap viewer at the highest zoom levels.

• What additional information do I receive when I consult the layer “Notifications for maps and geodata” (map.revision.admin.ch) in the webmap viewer?

  In the layer “Notifications for maps and geodata”, all notifications that have been registered in the category “An error in the background map” and tagged with a location geometry are published as points. The dot color indicates the current processing status of a notification. Before you create a new notification yourself, you can check map.revision.admin.ch to see if someone else has already submitted a correction for the same issue.
  
  You can also get additional information about each notification. When you click on a point, a window opens with various information, e.g. the date of entry, the State of report according to the legend, the description from the comment field or the relevant topic (e.g. Landscape model TLM Roads and Tracks).