61918: Acronis Backup Products: Applying retention fails with "DML: Logic Error: More than one match found" or "16515110 Pattern: Root (Composite) [Is (Common::String) = DMS::BackupLocation]" error

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A backup plan fails on applying retention rules and you receive one of the following errors:

DML: Logic Error: More than one match found.


| error 0xfc0026: 16515110
| Pattern:  Root (Composite)
| [Is (Common::String) = DMS::BackupLocation]
|  ID (Composite)
|  StorageUri (Common::String) = avfs:/online?account...


There are duplicate entries about Backup Location in local Agent database that leads to retention rules failure


To resolve the issue, remove the Agent from Management Server and run a special script that will clear the local databases to avoid duplicates. After you re-add the machine to Management Server, Agent will obtain the necessary configuration data from it automatically.

Perform the following steps on the Agent that causes the error:

  1. Delete the agent from Management Server: go to System Settings > Agents, select the agent and click Delete on the menu on the right
  2. Starting with version 7.8 update 2, the script is placed into Acronis folder along with Acronis Agent installation. If you are using an older build, download the script: click here.
  3. Clear the local databases using the script: 

4. Register the agent on the Management Server again: see How to manually add a machine to management server. After adding the machine, you will need to apply backup plans to the machine again.

If the problem reproduces after applying this solution, please collect a system report from the Agent where the issue occurs (see instructions for Acronis Backup 12.5 here and for Acronis Backup Cloud here) and contact Acronis Customer Central with a reference to this article.

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