The difference between signature_request_ID and signature_ID in the Dropbox Sign API

Updated Sep 19, 2025

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When using the Dropbox Sign API, the difference between signature request IDs and signature IDs are as follows:

  • Signature request ID: The identification number used for an overall signature request.
  • Signature ID: The identification number used for an individual signer on a signature request.

For example, let's say you send one signature request with ten signers. In the API response, there will be one signature request ID (for the one signature request that was sent) and ten separate signature IDs (one ID for each signer on the request).

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Note: When implementing embedded signing, you utilize the individual signature_id to fetch the sign_url via the execution of the Get Embedded Sign URL Endpoint. This sign_url is essential for launching the embedded iframe within your web application.

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