# \#get-customization-api

**URL:** https://forum.kintone.dev/tag/get-customization-api/89.md

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## [Unable to upload a new file using the response from the Get Customization API](https://forum.kintone.dev/t/unable-to-upload-a-new-file-using-the-response-from-the-get-customization-api/676)

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**Author:** [@TylerR](https://forum.kintone.dev/u/TylerR)\
**Replies:** 5\
**Last updated:** [November 29, 2022, 1:56am UTC](https://forum.kintone.dev/t/unable-to-upload-a-new-file-using-the-response-from-the-get-customization-api/676 "2022-11-29T01:56:47Z")

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I am using the Get Customization REST API (Endpoint: /k/v1/app/customize). This is returning correctly. However, when I try to use the returned fileKeys, I get an error saying, The specified file (id: XXXXXXXX) not fou…