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

# Update Asset Class

> Update asset class data



## OpenAPI

````yaml PATCH /api/v1/custom/org/{organization_uuid}/asset_classes/{asset_class_uuid}/
openapi: 3.0.3
info:
  title: TILT
  version: 0.0.1
servers: []
security: []
paths:
  /api/v1/custom/org/{organization_uuid}/asset_classes/{asset_class_uuid}/:
    patch:
      tags:
        - api
      description: Update asset class data
      operationId: api_v1_custom_org_asset_classes_partial_update
      parameters:
        - in: path
          name: asset_class_uuid
          schema:
            type: string
            format: uuid
          required: true
        - in: path
          name: organization_uuid
          schema:
            type: string
            format: uuid
          required: true
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/PatchedAssetClassWrite'
          application/x-www-form-urlencoded:
            schema:
              $ref: '#/components/schemas/PatchedAssetClassWrite'
          multipart/form-data:
            schema:
              $ref: '#/components/schemas/PatchedAssetClassWrite'
      responses:
        '200':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AssetClassRead'
          description: ''
      security:
        - ProAPIToken: []
components:
  schemas:
    PatchedAssetClassWrite:
      type: object
      description: |-
        Serializer for creating and updating AssetClass data.
        Requires exactly one universe definition.
      properties:
        name:
          type: string
          maxLength: 255
        description:
          type: string
        benchmark_index_identifier:
          type: string
          nullable: true
        index_uuid:
          type: string
          format: uuid
          nullable: true
        tilt_uuid:
          type: string
          format: uuid
          nullable: true
        single_security_tilt_asset_id:
          type: string
          nullable: true
          description: >-
            tilt_asset_id of a single ticker held at 100% by this asset class
            sleeve.
        event_contract_tilt_asset_id:
          type: string
          nullable: true
          description: tilt_asset_id of an event contract targeted directly by this sleeve.
        event_contract_side:
          nullable: true
          oneOf:
            - $ref: '#/components/schemas/ContractSideEnum'
            - $ref: '#/components/schemas/NullEnum'
        alternative_etf_tilt_asset_ids:
          type: array
          items:
            type: string
          nullable: true
          description: >-
            List of alternative ETF tilt_asset_ids. Only used when asset_class
            has a benchmark_index (ETF).
        asset_allocations:
          type: array
          items:
            $ref: '#/components/schemas/CustomizationConfigAssetClassAllocationWrite'
          description: >-
            Child sleeve allocations for a composite sleeve. Inline child
            creation is not supported.
        permitted_implementation_uuids:
          type: array
          items:
            type: string
            format: uuid
          description: Optional account replacements for this stable allocation slot.
    AssetClassRead:
      type: object
      description: Serializer for reading AssetClass data.
      properties:
        uuid:
          type: string
          format: uuid
          readOnly: true
        name:
          type: string
          maxLength: 255
        description:
          type: string
        benchmark_index_name:
          type: string
          nullable: true
          readOnly: true
        benchmark_index_identifier:
          type: string
          nullable: true
          readOnly: true
        benchmark_direct_indexing_supported:
          type: boolean
          readOnly: true
          nullable: true
          description: >-
            Whether the benchmark supports direct indexing; null when this
            sleeve has no benchmark index.
        index_name:
          type: string
          nullable: true
          readOnly: true
        index_uuid:
          type: string
          format: uuid
          readOnly: true
          nullable: true
        tilt_name:
          type: string
          nullable: true
          readOnly: true
        tilt_uuid:
          type: string
          format: uuid
          readOnly: true
          nullable: true
        single_security_tilt_asset_id:
          type: string
          nullable: true
          readOnly: true
        single_security_symbol:
          type: string
          nullable: true
          readOnly: true
        event_contract_tilt_asset_id:
          type: string
          nullable: true
          readOnly: true
        event_contract_side:
          readOnly: true
          nullable: true
          oneOf:
            - $ref: '#/components/schemas/AssetClassReadEventContractSideEnum'
            - $ref: '#/components/schemas/NullEnum'
        alternative_etf_tilt_asset_ids:
          type: array
          items:
            type: string
          description: Return list of alternative ETF tilt_asset_ids.
          readOnly: true
        permitted_implementation_uuids:
          type: array
          items:
            type: string
            format: uuid
          readOnly: true
        is_composite:
          type: boolean
          readOnly: true
          description: Whether this sleeve contains child sleeve allocations.
        asset_allocations:
          type: array
          items:
            $ref: '#/components/schemas/CustomizationConfigAssetClassAllocationRead'
          readOnly: true
        archived_at:
          type: string
          format: date-time
          readOnly: true
          nullable: true
          description: >-
            Archived sleeves remain resolvable by existing references but cannot
            be newly assigned.
        created:
          type: string
          format: date-time
          readOnly: true
        modified:
          type: string
          format: date-time
          readOnly: true
      required:
        - alternative_etf_tilt_asset_ids
        - archived_at
        - asset_allocations
        - benchmark_direct_indexing_supported
        - benchmark_index_identifier
        - benchmark_index_name
        - created
        - description
        - event_contract_side
        - event_contract_tilt_asset_id
        - index_name
        - index_uuid
        - is_composite
        - modified
        - name
        - permitted_implementation_uuids
        - single_security_symbol
        - single_security_tilt_asset_id
        - tilt_name
        - tilt_uuid
        - uuid
    ContractSideEnum:
      enum:
        - 'yes'
        - 'no'
      type: string
      description: |-
        * `yes` - yes
        * `no` - no
    NullEnum:
      enum:
        - null
    CustomizationConfigAssetClassAllocationWrite:
      type: object
      description: >-
        Serializer for creating and updating
        CustomizationConfigAssetClassAllocation data.
      properties:
        asset_class_uuid:
          type: string
          format: uuid
          description: UUID of the asset class
        target_allocation:
          type: string
          format: decimal
          pattern: ^-?\d{0,1}(?:\.\d{0,4})?$
          description: Target allocation for this asset class (0.0 to 1.0)
        direct_indexing_enabled:
          type: boolean
          description: Whether direct indexing is enabled for this asset class
        tilts:
          type: array
          items:
            $ref: >-
              #/components/schemas/CustomizationConfigAssetClassAllocationTiltWrite
          description: >-
            A list of tilts to apply to this asset class. If provided, replaces
            the existing list of tilts for this asset class.
      required:
        - asset_class_uuid
        - direct_indexing_enabled
        - target_allocation
    AssetClassReadEventContractSideEnum:
      enum:
        - 'yes'
        - 'no'
      type: string
      description: |-
        * `yes` - Yes
        * `no` - No
    CustomizationConfigAssetClassAllocationRead:
      type: object
      description: Serializer for reading CustomizationConfigAssetClassAllocation data.
      properties:
        asset_class_uuid:
          type: string
          format: uuid
          readOnly: true
        asset_class_name:
          type: string
          readOnly: true
        asset_class_description:
          type: string
          readOnly: true
        benchmark_index_identifier:
          type: string
          nullable: true
          readOnly: true
        benchmark_index_name:
          type: string
          nullable: true
          readOnly: true
        benchmark_symbol:
          type: string
          nullable: true
          readOnly: true
        single_security_tilt_asset_id:
          type: string
          nullable: true
          readOnly: true
        single_security_symbol:
          type: string
          nullable: true
          readOnly: true
        is_composite:
          type: boolean
          readOnly: true
        child_asset_allocations:
          type: array
          items:
            $ref: '#/components/schemas/CustomizationConfigAssetClassAllocationRead'
          readOnly: true
        archived_at:
          type: string
          format: date-time
          readOnly: true
          nullable: true
        target_allocation:
          type: string
          format: decimal
          pattern: ^-?\d{0,1}(?:\.\d{0,4})?$
        direct_indexing_enabled:
          type: boolean
        tilts:
          type: array
          items:
            $ref: >-
              #/components/schemas/CustomizationConfigAssetClassAllocationTiltRead
      required:
        - archived_at
        - asset_class_description
        - asset_class_name
        - asset_class_uuid
        - benchmark_index_identifier
        - benchmark_index_name
        - benchmark_symbol
        - child_asset_allocations
        - is_composite
        - single_security_symbol
        - single_security_tilt_asset_id
        - target_allocation
    CustomizationConfigAssetClassAllocationTiltWrite:
      type: object
      properties:
        tilt_uuid:
          type: string
          format: uuid
          writeOnly: true
          nullable: true
        index_uuid:
          type: string
          format: uuid
          writeOnly: true
          nullable: true
        weight_adjustment:
          type: string
          format: decimal
          pattern: ^-?\d{0,1}(?:\.\d{0,4})?$
          description: >-
            Signed sleeve weight adjustment as a decimal fraction; -0.10 means
            -10 percentage points.
      required:
        - weight_adjustment
    CustomizationConfigAssetClassAllocationTiltRead:
      type: object
      properties:
        tilt:
          allOf:
            - $ref: '#/components/schemas/CustomizationConfigTiltInfo'
          nullable: true
        index:
          allOf:
            - $ref: '#/components/schemas/CustomizationConfigIndexInfo'
          nullable: true
        weight_adjustment:
          type: string
          format: decimal
          pattern: ^-?\d{0,1}(?:\.\d{0,4})?$
          description: >-
            Signed percentage-point adjustment within the sleeve, expressed as a
            decimal fraction.
      required:
        - weight_adjustment
    CustomizationConfigTiltInfo:
      type: object
      properties:
        uuid:
          type: string
          format: uuid
          readOnly: true
        name:
          type: string
          nullable: true
          maxLength: 256
        published_at:
          type: string
          format: date-time
          nullable: true
      required:
        - uuid
    CustomizationConfigIndexInfo:
      type: object
      properties:
        uuid:
          type: string
          format: uuid
          readOnly: true
        name:
          type: string
          maxLength: 255
        status:
          $ref: '#/components/schemas/IndexStatus'
      required:
        - name
        - uuid
    IndexStatus:
      enum:
        - IN_PROGRESS
        - SUBMITTED
        - APPROVED
        - REJECTED
      type: string
      description: |-
        * `IN_PROGRESS` - In Progress
        * `SUBMITTED` - Submitted
        * `APPROVED` - Approved
        * `REJECTED` - Rejected
  securitySchemes:
    ProAPIToken:
      type: apiKey
      in: header
      name: X-Api-Key

````

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