---
title: "Check ability to register a customer"
method: POST
path: "/customers/actions/check-registration-ability"
tags: ["Customers actions"]
---

# Check ability to register a customer

`POST /customers/actions/check-registration-ability`

Check ability to register a customer with his identifier (email or phone number).

Determines whether the given identifier is available for new customer registration - for example, whether it is already associated with an existing account. Use this endpoint before submitting a registration form to provide early feedback to the user.

⚠️ For use in the Customer interface integration (mobile application, web portal, or kiosk), this action method has to be allowed in CareCloud. Please contact the CareCloud administrator.

## Request body

- object
  - `type` 'email' | 'phone', required — Type of the customer identifier. Phone numbers can be checked only if the phone is unique in the CareCloud project.
  - `value` string, required — Value of the customer identifier.

## Response `200`

OK

- object
  - `data` object
    - `registration_ability` boolean — Result of the possibility to register a customer with his identifier. *Possible results are: false - The identifier cannot be used for registration / true - The identifier can be used for registration*

## Other responses

- `400` — Bad input parameter. The response body's `error.error_data.invalid_params[]` array lists the parameters that caused the failure, each carrying a `reason` code. See the `BadRequestErrorBody` schema for the generic reason taxonomy. Operations with domain-specific business rules document additional reasons at the operation level.
- `401` — The client has invalid credentials or auth token.
- `403` — The client does not exist or the client tried to access an unauthorized property or resource.
- `404` — The resource was not found.
- `405` — The resource does not support the specified HTTP method.
- `429` — Too many requests - more than the resource limit.
- `500` — Server is not working as expected.
- `503` — Temporary state when the service is temporarily unavailable, overloaded or there is a maintenance window.

---

[API](https://skmtc.net/crmcarecloud/apis/rest-api-reference.md) · [All operations](https://skmtc.net/crmcarecloud/apis/rest-api-reference/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/crmcarecloud/rest-api-reference/revisions/329c06dbf8d9/schema)