File Key Conflict – SignatureAPI Docs

What Happened

The file key specified in the request is already in use by another file. Each file must have a unique key to avoid conflicts.

The response includes a detail property with more information about this error.

Use a unique key for each file.
If you need to replace an existing file, use a different key for the new file.
Check the detail property in the response to identify which key caused the conflict.