> ## 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.

# Resolve Employer Aliases

> Accepts a list of employer company identifiers and returns their corresponding UUIDs



## OpenAPI

````yaml api-reference/openapi.demo.json POST /v1/employer-identifiers/employer-aliases/resolve
openapi: 3.0.3
info:
  title: Payroll Integrations Public API
  version: 1.0.0
  description: Public API for Payroll Integrations platform
  license:
    name: MIT
servers:
  - url: https://demo1-api.payrollintegrationsdemo.com
    description: Demo
  - url: https://demo2-api.payrollintegrationsdemo.com
    description: Demo
  - url: https://demo3-api.payrollintegrationsdemo.com
    description: Demo
security: []
tags:
  - name: auth
  - name: employer-identifiers
  - name: meta
  - name: payroll-connections
  - name: payroll-platforms
  - name: roles
  - name: users
  - name: webhooks
paths:
  /v1/employer-identifiers/employer-aliases/resolve:
    post:
      tags:
        - employer-identifiers
      description: >-
        Accepts a list of employer company identifiers and returns their
        corresponding UUIDs
      operationId: post_v1_employer_identifiers_employer_aliases_resolve
      requestBody:
        description: List of company identifier values to map
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ResolveEmployerAliasRequest'
            example:
              aliases:
                - type: IDENTIFIER
                  value: ACME12345
                - type: IDENTIFIER
                  value: ACME67890
      responses:
        '200':
          description: Employer aliases resolved successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ResolveEmployerAliasResponse'
              example:
                data:
                  - alias:
                      type: IDENTIFIER
                      value: ACME12345
                    employerIdentifier: 01936a3f-0001-4000-8000-000000000001
                  - alias:
                      type: IDENTIFIER
                      value: ACME67890
                    employerIdentifier: null
        '400':
          description: Invalid request parameters
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '401':
          description: Invalid or missing token
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
          headers:
            WWW-Authenticate:
              schema:
                description: Authentication challenge (Bearer)
                type: string
              description: Authentication challenge (Bearer)
        '403':
          description: Insufficient permissions or access denied
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '429':
          description: Rate limit exceeded
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
          headers:
            Retry-After:
              schema:
                description: Number of seconds to wait before retrying
                type: string
              description: Number of seconds to wait before retrying
        '500':
          description: Internal server error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
      security:
        - bearerAuth: []
components:
  schemas:
    ResolveEmployerAliasRequest:
      type: object
      properties:
        aliases:
          description: List of company identifier values to map (max 100)
          maxItems: 100
          type: array
          items:
            anyOf:
              - type: object
                properties:
                  type:
                    description: >-
                      The type of employer alias provided (e.g. company
                      identifier)
                    type: string
                    enum:
                      - IDENTIFIER
                  value:
                    description: The alias value (e.g. MyCompanyIdentifier)
                    type: string
                required:
                  - type
                  - value
      required:
        - aliases
    ResolveEmployerAliasResponse:
      type: object
      properties:
        data:
          type: array
          items:
            type: object
            properties:
              alias:
                anyOf:
                  - type: object
                    properties:
                      type:
                        description: >-
                          The type of employer alias provided (e.g. company
                          identifier)
                        type: string
                        enum:
                          - IDENTIFIER
                      value:
                        description: The alias value (e.g. MyCompanyIdentifier)
                        type: string
                    required:
                      - type
                      - value
                    additionalProperties: false
              employerIdentifier:
                nullable: true
                description: The unique ID for the employer
                type: string
                format: uuid
                pattern: >-
                  ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$
            required:
              - alias
              - employerIdentifier
            additionalProperties: false
      required:
        - data
      additionalProperties: false
    ErrorResponse:
      type: object
      properties:
        message:
          description: Human-readable error message
          type: string
        errors:
          description: Array of specific error details
          type: array
          items:
            type: string
      required:
        - message
        - errors
      additionalProperties: false
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: >-
        Bearer token obtained from the /v1/auth/token endpoint. Send as:
        Authorization: Bearer <token>.

````