S3 Presigned URL 403 during Legal Hold Export

Administration
1

Struggling to understand why the S3 destination receives a 403 Forbidden error during the final upload phase of a legal hold export job. The IAM policy grants s3:PutObject permissions, and the role is correctly assumed by the Genesys Cloud service account.

The export job initiates successfully via /api/v2/interaction/recordings/export. It processes the metadata and generates the presigned URL correctly. The initial handshake with AWS S3 completes without issues.

However, when the actual recording payload is streamed, the connection drops. The job status remains in ‘IN_PROGRESS’ indefinitely before failing. This occurs specifically for digital channel transcripts in the EU-West region.

Audit logs show no access denial on the Genesys side. Is there a specific header mismatch or size limit causing this interruption? Any insights on debugging the presigned URL generation would be appreciated.

2

This issue stems from the presigned URL expiration window being too short for large file transfers.

  • Increase the URL validity period in the export configuration to at least 1 hour.
  • Verify the IAM policy includes s3:ListBucket to allow the final directory check.
3

Ah, this is a recognized issue… increase the ttl to 3600 seconds. also check for bucket policy restrictions on ssl.

4

This is caused by a mismatch in the expected content headers during the final PUT request. While the IAM policy grants access, the presigned URL generation often includes specific conditions that must be met exactly. If the export job sends a Content-Type header that differs even slightly from what was used to generate the signature, AWS rejects it with a 403.

Check the x-amz-content-sha256 header. The documentation suggests ensuring the payload integrity matches the signature calculation. Also, verify that the S3 bucket policy does not enforce aws:SecureTransport if the export service is using an older TLS version.

Here is the relevant section on export configurations: https://developer.genesys.cloud/api/docs/wfm/scheduling/exports

We usually see this when bulk schedules are published simultaneously, causing temporary rate limiting on the export service. It mimics a permission error but is actually a timeout issue. Try increasing the retry count in the export settings.