---
title: "Changes to Check if a customer number is available"
method: GET
path: "/Contact/Mapper/checkCustomerNumberAvailability"
---

# Changes to Check if a customer number is available

`GET /Contact/Mapper/checkCustomerNumberAvailability`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 1 of 4 revisions.

- **2024-08-06** `a12897a73d08`: 1 info

## Changes

- **2024-08-06** `a12897a73d08`: 1 info
  - the endpoint scheme security `api_key` was added to the API

---

[Operation](https://skmtc.dev/sevdesk/apis/sevdesk-api/docs/Contact/Mapper/checkCustomerNumberAvailability/get.md) - [API](https://skmtc.dev/sevdesk/apis/sevdesk-api.md) - [Page](https://skmtc.dev/sevdesk/apis/sevdesk-api/changes/Contact/Mapper/checkCustomerNumberAvailability/get)