## TL;DR
Fix this in headcount variance agent by acting on the exact problem first: refresh the session credential before the reconciliation starts, checkpoint the matched departments to a progress file outside the session, and on expiry sign in again and resume from the last checkpointed department instead of restarting the roster match. Do not rerun the whole workflow unchanged, because the same inputs produce the same failure. Prove the fix on one account, period or department first, then rerun the full scope and reconcile the results.

```text
auth token expired mid-run agent failed to reconcile the headcount variance to the HR roster error session expired failure
```

## Use this when
- The operation in headcount variance agent fails with this exact problem: auth token expired mid-run agent failed to reconcile the headcount variance to the HR roster error session expired failure.
- The same failure repeats on retry with unchanged inputs.
- A variance report, forecast, commentary or board pack step is blocked until this is resolved.

## Not for this skill when
- The notice is a platform outage from the vendor. Resolve that first, then return here if this problem remains.
- The operation completes and you only disagree with a business judgement such as the budget itself or a materiality call. That is an FP and A decision, not this failure.

## Steps
1. Reproduce the failure on one named account, period or department in headcount variance agent and record the full problem text plus the account, period or report involved. Verify: the failure is reproduced on demand on a named scope, not only seen in a log.
2. Apply the specific fix for this problem: refresh the session credential before the reconciliation starts, checkpoint the matched departments to a progress file outside the session, and on expiry sign in again and resume from the last checkpointed department instead of restarting the roster match. Verify: the single failing scope now behaves as the fix predicts, or the corrected value is visible on the record.
3. Check neighbouring accounts, periods or departments that share the same mapping, template or load, because this class of failure rarely affects only one scope. Verify: the neighbouring items are listed and each is marked affected or clear.
4. Rerun the original operation in headcount variance agent on the previously failing scope, watching for the same problem rather than assuming success from a quiet log. Verify: the operation completes and the original problem does not appear.
5. Compare the result against the source of truth, the GL actuals, the approved budget or the planning system record, so a silent partial success is caught. Verify: values match the source or every difference is named and explained.
6. Record the fix, the triggering input and the verification result on the report or close file so the next occurrence is recognised immediately. Verify: the record names the problem, the fix applied and the evidence of success.

## Variant phrasings

### auth token expired mid-run agent failed to reconcile the headcount variance to the HR roster error session expired failure
The verbatim form searchers paste from the console, report or run log. Treat it identically: same fix, same single scope proof, then the full rerun.

### How to fix - auth token expired mid-run agent failed to reconcile the headcount variance to the HR roster error session expired failure
The how to phrasing for the same failure in headcount variance agent. The steps above apply unchanged; start at the reproduction step rather than skipping to the rerun.

### headcount variance agent troubleshooting for this failure
The symptom first phrasing used when the console hides the full problem. Surface the full problem first, confirm it matches the text block above, then follow the steps.

## Why it happens
A full roster reconciliation outlives short session lifetimes, and without checkpoints held outside the session an expiry near the end discards a nearly finished match.

## Edge cases
- The period was closed, the budget was reloaded or the org mapping changed after the failing run started. Refresh the scope state and reapply the fix against the current values, not the values from the failed run.
- The single scope proof passes but the full rerun still fails on other scopes. Treat each remaining failure as its own scope, because a shared load or mapping can hide more than one cause.
- The source systems disagree on the correct value. The GL governs actuals, the approved budget version governs plan figures, and the planning system governs forecast; record which source won and why.

Compatibility: headcount variance agent at current versions, plus Power BI, Excel, Tableau, Looker, NetSuite and Adaptive Planning where the query names them; sources of truth are GL actuals and the approved budget, and no extra tooling is needed beyond access to those source records.

## Provenance

Resolved from the public thread: https://vectle.com/posts/pst_waXaYy4EzEU6RZWH3Gu7eQ