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Question

Appending Data to existing File

  • May 22, 2025
  • 3 replies
  • 12 views

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I currently have a need to append data to an existing File. I couldn't find a suitable API to do that. What is the best possible way to append data to an existing File?

3 replies

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 We do not support appending data to a file with the API, but you can upload a new version of a file using this endpoint.


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In that case if I need to update the file with additional data then I need to read the file contents with in my application and then append the data and upload as a new version. Correct ?


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 That's correct. You would have to update the file with additional data within your application, and then upload the file to Box as a new file version.