Practical guide

Why is a seemingly free booking slot missing?

Last materially reviewed 2026-09-23

Quick answerTrace eligibility, working time, occupied duration and resources in order before changing availability rules.
What to know

Begin with one exact example

Record the service, date, desired start, location and selected employee for a fictional missing slot. Avoid diagnosing a vague report that the calendar looks empty. Determine whether the slot should genuinely be offered under the business rules. An employee’s free calendar is not sufficient if the service needs a room, equipment, advance notice or a longer occupied interval. The expected result must be established before changing the system to match it.

What to know

Check eligibility before time

Confirm that the service is assigned to an eligible person at the relevant location. Then inspect normal hours and dated exceptions. A person can be present but not assigned to that service. Conversely, a correct assignment does not make someone available outside working hours. Trafft documents these configuration areas separately. Keep them separate in the diagnosis so a change to one does not hide an error in another.

What to know

Calculate the complete interval

Add preparation and reset to the service duration where those resources are occupied. Check the slot grid, minimum lead time and future-booking boundary. Next inspect shared resources and any external-calendar busy interval. This ordering is an analytical checklist, not a claim about the product’s internal evaluation order. It helps identify the smallest plausible cause without making broad changes such as removing every buffer or extending all staff hours.

What to know

Change one cause and retest the neighbor

If a correction is justified, record the prior setting and change only the relevant rule. Recheck the missing slot and a nearby slot that should remain unavailable. Also inspect an unaffected service to catch overly broad changes. If the cause remains uncertain, leave the slot unavailable and seek a specific explanation rather than overriding capacity. A booking that can be accepted only by disabling a real constraint is not a successful repair.

Continue when useful

Next: Slot interval and service duration are different decisions

Choose the interval between offered starts separately from the length of the appointment and its occupied time.

Open Slot interval and service duration are different decisions →

Sources used for this page

These records support the facts and comparisons above. Merchant-controlled records are labelled so you can separate product claims from independent evidence.

  1. Trafft booking settings — Merchant documentation · trafft.com · Merchant-controlled · checked 2026-09-23
  2. Trafft employee configuration — Merchant documentation · trafft.com · Merchant-controlled · checked 2026-09-23
  3. Trafft resource allocation — Merchant documentation · trafft.com · Merchant-controlled · checked 2026-09-23