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

# Get required inputs for batch generation

> Returns the required input data point types for batch generation on this ledger. Requires the ledger to have a model configured.



## OpenAPI

````yaml GET /ledgers/{ledger_id}/required_inputs
openapi: 3.1.0
info:
  title: Mangrove - API
  version: 1.1.0
servers:
  - url: https://app.gomangrove.com/api/v1
security:
  - sec0: []
paths:
  /ledgers/{ledger_id}/required_inputs:
    get:
      summary: Get required inputs for a ledger
      description: >-
        Returns the required input data point types for batch generation on this
        ledger. Requires the ledger to have a model configured.
      operationId: get-ledger-required-inputs
      parameters:
        - name: ledger_id
          in: path
          description: Ledger friendly ID (e.g., lgr_abc123def456)
          schema:
            type: string
          required: true
      responses:
        '200':
          description: '200'
          content:
            application/json:
              examples:
                Result:
                  value:
                    data:
                      - id: 1
                        name: Mass of Feedstock Delivery
                        slug: feedstock-delivery-mass
                        unit: U.S. ton
                        value_type: number
                        category: input
                        subcategory: null
                        is_manual_select: false
                        allocation_groups: []
                        output_of_ledgers: []
                      - id: 2
                        name: Grid Emission Factor
                        slug: grid-emission-factor
                        unit: tCO2e/MWh
                        value_type: number
                        category: input
                        subcategory: null
                        is_manual_select: true
                        allocation_groups: []
                        output_of_ledgers:
                          - id: lgr_xyz789
                            name: Emission Factors Ledger
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      type: object
                      properties:
                        id:
                          type: integer
                        name:
                          type: string
                        slug:
                          type: string
                        unit:
                          type: string
                          nullable: true
                        value_type:
                          type: string
                        category:
                          type: string
                        subcategory:
                          type: string
                          nullable: true
                        is_manual_select:
                          type: boolean
                        allocation_groups:
                          type: array
                          items:
                            type: object
                        output_of_ledgers:
                          type: array
                          items:
                            type: object
                            properties:
                              id:
                                type: string
                              name:
                                type: string
        '422':
          description: 422 - No model configured
          content:
            application/json:
              examples:
                Result:
                  value:
                    status: error
                    statusCode: 422
                    errors:
                      - message: Ledger does not have a model configured
      deprecated: false
components:
  securitySchemes:
    sec0:
      type: apiKey
      in: header
      name: Authorization
      x-bearer-format: ''

````