# Unexpected difference in fileset (why must the topic be unique)

**URL:** <https://forum.duplicati.com/t/unexpected-difference-in-fileset-why-must-the-topic-be-unique/17653>\
**Category:** Support\
**Created:** [April 1, 2024, 11:28pm UTC](https://forum.duplicati.com/t/unexpected-difference-in-fileset-why-must-the-topic-be-unique/17653 "2024-04-01T23:28:16Z")\
**Posts on this page:** 1\
**Showing post:** 20

<div class="post-metadata">

**Author:** ![DesktopMasters](https://forum.duplicati.com/user_avatar/forum.duplicati.com/desktopmasters/32/725_2.png) [@DesktopMasters](https://forum.duplicati.com/u/DesktopMasters)\
**Post date:** [April 4, 2024, 9:42pm UTC](https://forum.duplicati.com/t/unexpected-difference-in-fileset-why-must-the-topic-be-unique/17653/20 "2024-04-04T21:42:09Z")

</div>

> [@ts678](#):
>
> I don’t have your destination to compare with.

Destination Store is: 614.05G

> [@ts678](#):
>
> if you look closely, version 38 somehow did not, although it should exist.

I have no memory of it, but it is possible I removed that version at some point to resolve another problem.

> [@ts678](#):
>
> Database ID having gotten up to 811 means this might be a very old backup, and those have concerns themselves, as Duplicati was worse years ago. Sometimes old defects stay around.

It has been around for a long while. As it is meant to be a temporary emergency cloud backup I only have been actively storing 30 to 60 versions of daily backups.

> [@ts678](#):
>
> You see multiple rows where the ID column is 1? That seems impossible. It’s the primary key.  
> If you’re looking at the recreated database, you need to be looking at the original one instead.

 ![Screenshot](https://forum.duplicati.com/uploads/default/original/2X/d/dd94c47bd32977ce09890191f4b9ed8b35070d43.png)

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