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K2 connection Server error appears when trying to delete a K2 Connect destination that is no longer needed

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This article was created in response to a support issue logged with K2. The content may include typographical errors and may be revised at any time without notice. This article is not considered official documentation for K2 software and is provided "as is" with no warranties.
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Issue

A K2 Connect Server error appears when trying to delete the K2 Connect destination that is no longer needed. As a result, the K2 Connect destination fails to get deleted.

Symptoms

The following error appears: 
"K2 Connect Server: There are related Application Instances to the underlying Destination.  Please remove the destination relation first."

Troubleshooting Steps

To resolve this, please delete the Application Instance from the K2 Connect Administration Tool:

1. In the main window, under the "Registered Components" section, expand the "Application Server" node. (Application Server > [Server Name])
2. Right-click on the Application Instance listed. There should be a "Remove Application Instance" option shown.
3. Select the option to remove the Application Instance.
4. After it is done, you may proceed to delete the Destination and System.