Studio Prism Integration Fails With NullPointerException on Bucket Create
The error Integration Failed. com.capeclear.mediation.MediationException: application=wcc - Custom step id=GenerateCreateBucketRequest, ref=GenerateCreateBucketRequest - Error while invoking bean, reason: null Root Cause: java.lang.NullPointerException. See the consolidated report for further details
What it means
A Studio integration that writes to a Prism Analytics table can throw a NullPointerException at the GenerateCreateBucketRequest step, even when domain security looks correct, because the Prism dataset or table the integration references isn't fully provisioned or its schema doesn't match what the integration is sending.
Troubleshooting
- Open the consolidated integration report referenced in the error, it usually has a more specific failure than the top-level NullPointerException.
- Confirm the target Prism dataset and table actually exist and are in an Active (not Draft or processing) state before the integration runs.
- Recheck the schema mapping: a Prism table field type mismatch or a missing required field on the CSVSchema step is a common cause of a null bucket request even when security passes.
- Confirm the integration's ISU has Prism Analytics Administrator or equivalent domain access, not just generic Put access, since bucket creation calls Prism's own API surface separate from core security domains.
⚡ Quick fix
Re-run the integration after confirming the Prism dataset and table are Active and the CSVSchema step's field list matches the table schema exactly.
✓ Permanent fix
Validate the target Prism table's schema against the integration's CSVSchema step as a checklist step before promoting any new Prism-writing Studio integration to production, since Workday's error here at runtime is far less specific than the actual mismatch cause.
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