# Error message (876271)
**URL:** https://discussions.unity.com/t/error-message-876271/876271
**Category:** Graphics
**Created:** [March 27, 2022, 8:58am UTC](https://discussions.unity.com/t/error-message-876271/876271 "2022-03-27T08:58:14Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@dubois121](https://discussions.unity.com/u/dubois121)
#### Post date: [March 27, 2022, 8:58am UTC](https://discussions.unity.com/t/error-message-876271/876271/1 "2022-03-27T08:58:14Z")
i have this message:
’
Identifier uniqueness violation: ‘Name:, Type:Mesh’. Multiple Objects with the same name/type are generated by this Importer. There is no guarantee that subsequent imports of this asset will properly re-link to these targets."
what’s the solution ?
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### Author:  [@Dreoh](https://discussions.unity.com/u/Dreoh)
#### Post date: [April 14, 2022, 7:45am UTC](https://discussions.unity.com/t/error-message-876271/876271/2 "2022-04-14T07:45:58Z")
I am also getting this in my auto spritesheet slicing script
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### Author:  [@mgear](https://discussions.unity.com/u/mgear)
#### Post date: [April 14, 2022, 7:50am UTC](https://discussions.unity.com/t/error-message-876271/876271/3 "2022-04-14T07:50:22Z")
info about that,
> [@Upgrading to 2019.3a - FBX Import - Identifier uniqueness violation](https://discussions.unity.com/t/752898/3):
>
> Hi there! TL;DR: When multiple subassets are registered with the same name, we cannot certify they will keep the same local file ids if the source changes because in that particular case ids are assigned sequentially. Which means that if the order changes in the source file, the resulting ids will be mixed up. The recommended way would be to prevent/fix meshes names in your fbx export so there is no duplicate. The FBX sdk report them only by name, which prevents us to generate fixed ids when w…