# Stop selling the same room twice

Harbor by Signalry · hotel job `prevent-double-oversell`
https://harbor.signalry.ai/jobs/prevent-double-oversell

How and who for the hotel job—verified when attested. Advice unless labeled verified. This brief is a worksheet, not an appraisal and not a quote.

## The job

When PMS and CRS disagree after a busy weekend, I want a guard so a sold room cannot be sold again — and a human who owns the disagreement.

**Outcome the catalog names:** A named inventory owner, a disagreement ticket within 15 minutes, and zero silent reservation moves.

**Desk:** tech
**Urgency on the catalog:** This weekend
**Typical budget band (catalog, not a quote):** $8–22k discipline + a watch
**Typical timeline (catalog, not a promise):** 2–6 weeks

## Scoped brief

Pick one inventory owner — usually the CRS or the PMS, never both, never the RMS. Twin Book-shaped software watches the gap. A person resolves. Harbor treats silent guest moves as an integrity fail. This is a sister job to connect-rms-crs; do that first if writes are the bug.

1. **Name the inventory owner on one page.** CRS, PMS, or a channel manager — one. If two systems can write availability, stop buying tools and draw the diagram.
2. **Watch the gap on a clock.** When the books disagree, page a named person. Fifteen minutes on a Saturday is the product.
3. **Forbid silent moves.** A guard that ‘fixes’ a guest into another room is a new bug. Ticket. Human. Call the guest if you must.
4. **Publish oversells, not uptime.** How many double-sells, how long to resolve, how many guests called. Monday pack.

## When not to buy

A product that auto-cancels the cheaper reservation. That is a second inventory owner you cannot fire.

## Provider shortlist

- [Twin Book](https://harbor.signalry.ai/providers/twin-book) — software · Inventory guard across PMS and CRS. Catalog score 8.1 (post-job shape, not a verification).
- [Keystone Switch PMS](https://harbor.signalry.ai/providers/keystone-switch) — software · PMS cutover & parallel run. Catalog score 8.3 (post-job shape, not a verification).
- [Northline PMS](https://harbor.signalry.ai/providers/northline-pms) — software · Property management system. Catalog score 8 (post-job shape, not a verification).
- [Folio Watch Agent](https://harbor.signalry.ai/providers/folio-watch) — agent · Inventory & card-flow watch. Catalog score 8.4 (post-job shape, not a verification).

## Success the brief names

- Inventory owner written and signed.
- Disagreement tickets under 15 minutes on weekends.
- Zero silent reservation moves in 30 days.

## Pitfalls

- RMS writing rooms.
- A channel manager and a CRS both owning availability.
- Hiding walks in ‘operational adjustments.’

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Stable id: `prevent-double-oversell`
Source: Harbor by Signalry · https://harbor.signalry.ai
Verified Outcome is not insurance. Do not treat a catalog score as attested proof.