# Troubleshooting requests

An invitation that never arrived, a link that shows a notice instead of the form, a workflow that was not told, or one that stopped matching after an edit.

## The invitation never arrived

Open the request on the [Requests page](https://formstep.io/docs/requests/managing-requests/) and read its timeline. The first invitation line tells you which case you are in.

| Timeline says | What it means | What to do |
| - | - | - |
| Invitation queued | Accepted and about to be sent. | Give it a minute. If it stays queued, check the request has an email address. |
| Invitation sent | The email left Formstep. | Ask the recipient to check their spam folder. Sending from your own email domain helps. |
| Invitation failed | Formstep could not send it, the address bounced, or the recipient marked it as spam. | If the address is wrong, send a new request to the right one. Otherwise copy the link and send it yourself. |
| No invitation line | The request was created with Link, so nothing was emailed. | Copy the link and send it yourself. |

Sending from [your own email domain](https://formstep.io/docs/branding-domains/custom-domains/#custom-email-domains) makes invitations more likely to reach the inbox. On Free, Formstep emails only your first 10 invitations, to your own address.

## The link shows a notice instead of the form

The request has ended: it was completed, it expired, or it was canceled. A completed request cannot be answered again. If the recipient needs another go, send a new request.

## The workflow was not told

The request page’s **Callback** section shows where Formstep tried to send the outcome and what happened. _Callback failed_ means Formstep tried for about four hours and gave up. Ask whoever runs the workflow to fix it, then click **Replay** to send it again. Developers: see [Request callbacks](https://formstep.io/docs/developers/callbacks/).

## A workflow stopped matching after an edit

An answer is missing from what the workflow receives, or it can no longer fill in a field. A published field key was changed, or its question was deleted and replaced. Type the old key on the field in the editor’s **Fields** tab and publish again. See [When a key is about to disappear](https://formstep.io/docs/requests/field-keys/#removed-keys).

Developers: see the [API error reference](https://formstep.io/docs/developers/rest-api/#error-reference) for every error a request call can return.

## Next steps

[The Requests page](https://formstep.io/docs/requests/managing-requests/) — Read a request's timeline and callback

[Invitations, reminders & expiry](https://formstep.io/docs/requests/invitations-and-reminders/) — The email, the reminders and when a request ends