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Following an upgrade of Appian, select Connected Systems fail with the below error message:
In the application server log, the below error message will be printed:
YYYY-MM-DD HH:MM:SS [localhost-startStop-1] ERROR com.appiancorp.connectedsystems.http.migration.configobject.MigratePersistedConnectedSystems - Error persisting, migration will be skipped for this connected system: ... com.appiancorp.suiteapi.content.exceptions.InsufficientNameUniquenessException: Name is insufficiently unique
This behavior occurs when an Appian Application has the same name as a Connected System object. This issue has been addressed via AN-145648 in the following hotfixes/versions:
If you require a hotfix for Appian 17.4 - 18.1, please open a support case with Appian Support.
Apply the latest hotfix to your Appian installation or upgrade to the latest version of Appian.
There are two workarounds that can resolve this issue:
Recreating any Connected Systems that are in this broken state can resolve this issue. To do so:
On-Premise
<APPIAN_HOME>/conf:
conf.suite.RERUN_CS_ENCRYPTION_MIGRATION=true
This article applies to Appian 17.4 and later.
Last Reviewed: December 2019