Altium NEXUS Documentation

WorkspaceManager_Err-ConflictingHarnessDefinitionConflicting Harness Definition_AD

Created: August 3, 2021 | Updated: August 3, 2021
This documentation page references Altium NEXUS/NEXUS Client (part of the deployed NEXUS solution), which has been discontinued. All your PCB design, data management and collaboration needs can now be delivered by Altium Designer (with Altium Designer Enterprise Subscription) and a connected Altium 365 Workspace. Check out the FAQs page for more information.
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Parent category: Violations Associated with Harnesses

Default report mode: 


This violation occurs when there are conflicting Harness Entries for the same Harness Type, either at a graphical or textual level (in the Harness Definition File).

For more information on signal harnesses, see Working with Signal Harnesses.


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:

Conflicting Harness Definition for <HarnessType>


  • HarnessType is the current conflicting Harness Type.

Recommendation for Resolution

Use the Details region of the Messages panel to quickly cross probe to the offending objects (Harness Definition Files and Harness Connectors) within the Signal Harness. Update the Harness Definition File to reflect the changes, or remove the offending Harness Entry.

Harness Definition Files for the design can be found in the Settings - Harness Definitions Files folder for that project, in the Projects panel.


  • 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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