Could someone explain the discrepancy between the documented presigned URL validity and the actual expiry encountered during large-scale legal discovery exports? We are operating in the London region on Genesys Cloud v3.5.2. The environment uses a dedicated S3 bucket for archiving digital channel interactions, specifically WhatsApp and Web Chat transcripts required for regulatory compliance. The bulk export job is initiated via the Recording API, targeting a specific date range for a pending legal hold request.
The export job status transitions to ‘COMPLETED’ without any visible errors in the Genesys Cloud admin console. However, when the downstream ingestion script attempts to download the files using the provided presigned URLs, approximately 15% of the links return a 403 Forbidden response. The error payload indicates the signature has expired. This occurs despite the API documentation stating that presigned URLs for bulk exports should remain valid for 24 hours. The files are relatively small, averaging 2KB each, so bandwidth throttling is not the cause.
We have verified the server time on our ingestion servers, which is synchronized via NTP to Europe/London standards. There is no significant clock skew. The issue seems to correlate with the number of files in the batch. Batches under 500 files work perfectly. Batches exceeding 1000 files start showing these 403 errors on files generated later in the sequence. It appears the expiry timestamp might be calculated relative to the job start time rather than the individual file generation time, or there is a hidden limit on concurrent active URLs.
We need to ensure chain of custody integrity, so re-triggering the job is not an option as it could overwrite existing audit trails or create duplicate records. Has anyone found a workaround for this presigned URL lifecycle issue? We are considering switching to a direct S3 role assumption model, but the current setup relies heavily on the managed export pipeline for compliance logging.