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OpenAPI Specification

openapi: 3.2.0
info:
  title: SAP Concur Expense Allocations API
  description: SAP Concur Expense provides REST APIs for managing the full expense lifecycle including creating and submitting expense reports, managing individual expense entries, capturing receipt images, handling quick expenses, managing allocations across cost centers, and retrieving reimbursement payment batches. Authentication uses OAuth 2.0 with support for authorization code and refresh token flows.
  version: '3.0'
  contact:
    name: SAP Concur Developer Support
    url: https://developer.concur.com/support
  termsOfService: https://developer.concur.com/terms-of-use
servers:
- url: https://us.api.concursolutions.com/api/v3.0
  description: United States Production
- url: https://eu.api.concursolutions.com/api/v3.0
  description: Europe Production
- url: https://cn.api.concursolutions.com/api/v3.0
  description: China Production
security:
- OAuth2:
  - expense.report.read
  - expense.report.write
tags:
- name: Allocations
  description: Manage cost center, project, or GL account allocations for expense entries. Supports percentage-based and amount-based splits.
paths:
  /expense/allocations:
    get:
      operationId: listAllocations
      summary: List Expense Allocations
      description: Returns expense allocations for the specified entry ID. Allocations split an expense across multiple cost centers, projects, or GL accounts.
      tags:
      - Allocations
      parameters:
      - name: entryID
        in: query
        description: The expense entry ID to retrieve allocations for
        required: true
        schema:
          type: string
      - name: offset
        in: query
        description: Starting page offset for pagination
        required: false
        schema:
          type: string
      - name: limit
        in: query
        description: Number of records to return per page (max 100)
        required: false
        schema:
          type: integer
          maximum: 100
      responses:
        '200':
          description: Success - Returns list of allocations
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AllocationCollection'
        '400':
          description: Bad Request
        '401':
          description: Unauthorized
        '500':
          description: Internal Server Error
components:
  schemas:
    AllocationCollection:
      type: object
      properties:
        Items:
          type: array
          items:
            $ref: '#/components/schemas/Allocation'
        NextPage:
          type: string
    Allocation:
      type: object
      properties:
        AllocationID:
          type: string
          description: The unique identifier of the allocation
        EntryID:
          type: string
          description: The associated expense entry ID
        Percentage:
          type: number
          format: double
          description: Percentage of the expense allocated to this cost object
        Amount:
          type: number
          format: double
          description: Amount allocated in report currency
        AccountCode1:
          type: string
          description: Primary GL account code
        AccountCode2:
          type: string
          description: Secondary GL account code
        Custom1:
          type: string
          description: Custom allocation field 1 (e.g., cost center)
        Custom2:
          type: string
          description: Custom allocation field 2 (e.g., project code)
        URI:
          type: string
  securitySchemes:
    OAuth2:
      type: oauth2
      flows:
        authorizationCode:
          authorizationUrl: https://us.api.concursolutions.com/oauth2/v0/authorize
          tokenUrl: https://us.api.concursolutions.com/oauth2/v0/token
          scopes:
            expense.report.read: Read expense reports
            expense.report.write: Create and modify expense reports
            expense.report.delete: Delete expense reports
externalDocs:
  description: SAP Concur Expense API Reference
  url: https://developer.concur.com/api-reference/expense/