Altium Designer Documentation

WorkspaceManager_Err-HarnessObjectOnABusHarness Object on a Bus_AD

Created: August 3, 2021 | Updated: August 3, 2021
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Parent category: Violations Associated with Nets

Default report mode:


This violation occurs when an object such as a Port, Sheet Entry, or Harness Entry has an associated Harness Type, which represents a connection to a Signal Harness, but it is wired to a bus.


If compiler errors and warnings are enabled for display on the schematic (enabled on the Schematic - Compiler page of the Preferences dialog), an offending object will display a colored squiggle beneath it. Hovering over the object will display a pop-up hint that summarizes the violation. A notification is also displayed in the Messages panel in the following format:

Harness <Object> <ObjectName> at <Location> placed on bus


  • Object is the offending Port, Sheet Entry, or Harness Entry.
  • ObjectName is the label of the offending object.
  • Location is the X,Y coordinates for the offending object.

Recommendation for Resolution

Use the Details region of the Messages panel to quickly cross probe to the offending object (Port, Sheet Entry, or Harness Entry). Ensure that the object is not connected to a bus, but rather a signal harness.


  • Object hints will only appear provided the Enable Connectivity Insight option is enabled on the System - Design Insight page of the Preferences dialog. Use the controls associated with the Object Hints entry in the Connectivity Insight Options region of the page to determine the launch style for such hints (Mouse Hover and/or Alt+Double Click). 
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