# Create client

Creates a Client with displayName + externalId; both must be unique within the organization (case-insensitive). Requires the Pallet Data Extensions / Client feature to be enabled.

Endpoint: POST /integration/rest/api/v1/client
Version: v0
Security: X-AUTH-KEY

## Request fields (application/json):

  - `displayName` (string)
    Display name (required, unique per org, max 255).

  - `externalId` (string)
    External identifier (required, unique per org, max 255).

## Response 200 fields (*/*):

  - `createDate` (string)

  - `updateDate` (string)

  - `deepLink` (string)
    Deep link URL to open this entity in Ops.App.

  - `displayName` (string)
    Customer-visible display name. Unique per organization (case-insensitive).

  - `externalId` (string)
    Customer-side external identifier. Unique per organization (case-insensitive).

## Response 400 fields (*/*):

  - `code` (string)
    Error code

  - `message` (string)
    Error message

  - `timeStamp` (integer)
    Timestamp

  - `correlationId` (string)
    Correlation id

## Response 403 fields (*/*):

  - `code` (string)
    Error code

  - `message` (string)
    Error message

  - `timeStamp` (integer)
    Timestamp

  - `correlationId` (string)
    Correlation id