# An item with the same key has already been added

**URL:** <https://qa.fmod.com/t/an-item-with-the-same-key-has-already-been-added/17060>\
**Category:** Unity\
**Created:** [April 15, 2021, 8:41am UTC](https://qa.fmod.com/t/an-item-with-the-same-key-has-already-been-added/17060 "2021-04-15T08:41:54Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![joseph](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/joseph/32/264_2.png) [@joseph](https://qa.fmod.com/u/joseph)\
**Post date:** [April 27, 2021, 4:23am UTC](https://qa.fmod.com/t/an-item-with-the-same-key-has-already-been-added/17060/2 "2021-04-27T04:23:49Z")

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Unfortunately, without knowing how and where you’re setting the items that use the `StandaloneOSX` key, but evidently you have more than one of them. Can you find them in your code?

In some ways, your issue sounds similar to [this one](https://qa.fmod.com/t/fmod-cleaning-up-duplicate-platform-warning/16646/23). Perhaps looking at that thread might reveal some possible lines of investigation?

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