> ## Documentation Index
> Fetch the complete documentation index at: https://developer.payrollintegrations.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Update Employer Identifier

> Updates an existing employer identifier

<Info>
  Learn more about [Employer
  Identifiers](/api-reference/glossary#employer-identifier) in the Glossary.
</Info>


## OpenAPI

````yaml PATCH /v1/employer-identifiers/{employer_identifier}
openapi: 3.1.0
info:
  title: Payroll Integrations Public API
  description: Public API for Payroll Integrations platform
  version: '2025-10-28T20:05:03Z'
  license:
    name: MIT
servers:
  - url: https://api.payrollintegrationsapp.com
    description: Prod environment
  - url: https://demo1-api.payrollintegrationsdemo.com
    description: Demo environment
  - url: https://demo2-api.payrollintegrationsdemo.com
    description: Demo environment
  - url: https://demo3-api.payrollintegrationsdemo.com
    description: Demo environment
security:
  - bearerAuth: []
paths:
  /v1/employer-identifiers/{employer_identifier}:
    patch:
      tags:
        - Employer Identifiers
      summary: Update employer identifier
      description: Updates an existing employer identifier
      operationId: updateEmployerIdentifier
      parameters:
        - name: employer_identifier
          in: path
          required: true
          schema:
            type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/PatchEmployerIdentifierRequest'
      responses:
        '200':
          description: Employer identifier updated successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PatchEmployerIdentifierResponse'
              example:
                id: 550e8400-e29b-41d4-a716-446655440000
                displayName: Updated 401(k) Employer Identifier Name
                identifier: identifier-12345
                createdAt: '2024-01-15T10:30:00Z'
        '400':
          description: Bad Request - Invalid request body or validation error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: Unauthorized - authentication credentials are missing or invalid
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '403':
          description: Forbidden
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: Not Found - Employer identifier does not exist
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
components:
  schemas:
    PatchEmployerIdentifierRequest:
      type: object
      properties:
        displayName:
          type: string
          description: Display name of the employer identifier
          minLength: 1
          maxLength: 200
          pattern: ^[a-zA-Z0-9\s.&,]+$
        identifier:
          type: string
          description: Identifier of the employer identifier
          minLength: 1
          maxLength: 200
          pattern: ^[a-zA-Z0-9\s.&,]+$
    PatchEmployerIdentifierResponse:
      type: object
      required:
        - id
        - displayName
        - identifier
        - createdAt
      properties:
        id:
          type: string
          format: uuid
        displayName:
          type: string
        identifier:
          type: string
        createdAt:
          type: string
          format: date-time
    Error:
      type: object
      required:
        - message
      properties:
        message:
          type: string
          description: Error message describing what went wrong
        errors:
          type: array
          description: Optional array of detailed error messages
          items:
            type: string

````