> This page is for version Latest (default).
> For other versions, use one of these documentation indexes:
> - Latest (default): https://docs.nvidia.com/nemo-helix/latest/llms.txt
> - 0.8.0: https://docs.nvidia.com/nemo-helix/v0.8.0/llms.txt
> - 0.7.3: https://docs.nvidia.com/nemo-helix/v0.7.3/llms.txt
> - 0.7.2: https://docs.nvidia.com/nemo-helix/v0.7.2/llms.txt
> - 0.7.1: https://docs.nvidia.com/nemo-helix/v0.7.1/llms.txt
> - 0.7.0: https://docs.nvidia.com/nemo-helix/v0.7.0/llms.txt
> - 0.6.0: https://docs.nvidia.com/nemo-helix/v0.6.0/llms.txt
> - 0.5.1: https://docs.nvidia.com/nemo-helix/v0.5.1/llms.txt
> - 0.5.0: https://docs.nvidia.com/nemo-helix/v0.5.0/llms.txt
> - 0.4.0: https://docs.nvidia.com/nemo-helix/v0.4.0/llms.txt
> - 0.3.0: https://docs.nvidia.com/nemo-helix/v0.3.0/llms.txt
> - 0.2.0: https://docs.nvidia.com/nemo-helix/v0.2.0/llms.txt

> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.nvidia.com/nemo-helix/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.nvidia.com/nemo-helix/_mcp/server.

# v0.7.3 - 2026-10-16

NeMo Helix v0.7.3 is a patch release for the 0.7 release line that helps existing
Helm installations preserve embedded PostgreSQL storage metadata during
upgrades. It also includes the deployment readiness fixes in
[v0.7.2](/documentation/reference/release-notes/release-0-7-2).

## What's fixed

* **Preserve PostgreSQL claim-template labels.** The Helm chart adds
  `postgresql.persistence.claimTemplateLabels` so older installations can
  retain the exact labels on the embedded PostgreSQL StatefulSet's `data`
  volume claim template. This avoids upgrade failures caused by changes to
  immutable claim-template labels. The default `{}` preserves existing chart
  behavior; operators must supply their existing labels when needed.

## Upgrade from v0.7.2

If you use embedded PostgreSQL, copy the complete label map from the existing
StatefulSet's `data` claim template into
`postgresql.persistence.claimTemplateLabels` before upgrading. Keep those exact
values on subsequent upgrades, including old chart and application version
labels. This setting only addresses claim-template labels; preserve existing
release and resource names, storage configuration, and the secrets encryption
key and its Secret reference as well. See
[Database Setup](/documentation/kubernetes-deployment/setup/helm/database-setup#preserve-embedded-postgresql-claim-template-labels-on-upgrade).

## Known issues

* **DPO jobs fail before the first training step with `KeyError: 'checkpoint'`.**
  The generated DPO configuration still omits the
  `policy.dtensor_cfg.checkpoint` section required by the pinned NeMo-RL
  version. There is no workaround in the 0.7 release line. DPO jobs run on
  v0.6.0; GRPO jobs are not affected. See
  [Customizer troubleshooting](/documentation/reference/troubleshooting/customizer).
* **Hermes trials can omit the `relay_atif` evidence descriptor.** Use the
  `trace:atif` descriptor instead; it points at the same ATIF file.