---
title: "Void Unused Number"
method: POST
path: "/billing/documents/number-void"
---

# Void Unused Number

`POST /billing/documents/number-void`

## Request

- Base URL: `https://api-docs.session-exchange.com` (the document declares no server; this is the origin it was published from)
- URL: `https://api-docs.session-exchange.com/billing/documents/number-void`
- Auth: none declared

Record a GAP in a document series by hand (global admin): a number that the register reports
as missing (GET /reports/document-gaps) and no document uses. Refuses a used number. Body:
{number, kind, reason}.

## Response `200`

Successful Response

- unknown

---

[API](https://skmtc.dev/session-exchange/apis/a4sx.md) · [All operations](https://skmtc.dev/session-exchange/apis/a4sx/llms.txt) · [OpenAPI document](https://skmtc.dev/session-exchange/apis/a4sx/revisions/abaefc33dfc7?raw)