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

# Reference units. Not tenant-scoped: a millimetre is a millimetre.



## OpenAPI

````yaml /api-reference/openapi.json patch /units_of_measure
openapi: 3.0.0
info:
  description: ''
  title: >-
    The only schema PostgREST exposes (ADR-014). Reads are security_invoker
    views; writes are SECURITY DEFINER functions. Rebuilt wholesale on every
    deploy — it holds no data.
  version: 12.2.3
servers:
  - url: https://app.assetinfinity.ai/api
security: []
tags:
  - name: Signing in
  - name: Profile
  - name: Assets
  - name: Asset lifecycle
  - name: Work lifecycle
  - name: Maintenance
  - name: Inventory
  - name: Inventory detail
  - name: Procurement
  - name: Contracts
  - name: Workforce
  - name: Capacity
  - name: Dispatch
  - name: Routing
  - name: Tools
  - name: Inspections
  - name: Verification
  - name: Reliability
  - name: Parts demand
  - name: Sensors and meters
  - name: Map
  - name: Floor plans
  - name: Labels
  - name: Lost and found
  - name: Root cause analysis
  - name: Reports
  - name: Audit center
  - name: Activity
  - name: Notifications
  - name: Channels
  - name: Search
  - name: Copilot
  - name: Import
  - name: Files
  - name: Sync
  - name: Support
  - name: Admin
  - name: Access
  - name: Lookups
  - name: Read models
  - name: Branding
  - name: Custom fields
  - name: Form studio
  - name: Workflows
  - name: Workflow studio
  - name: Rules
  - name: Statuses and transitions
  - name: Currencies and locales
  - name: Work configuration
  - name: Asset configuration
  - name: Inventory configuration
  - name: Tool configuration
  - name: Workforce configuration
  - name: Vendor and contract configuration
  - name: Document configuration
  - name: Inspection configuration
  - name: Sites, locations and the organisation
  - name: Platform
  - name: Self verification
  - name: Setup
  - name: Tools on a job, and who has them out
  - name: Vendors and contracts
  - name: Work order execution
  - name: Workforce detail
externalDocs:
  description: PostgREST Documentation
  url: https://postgrest.org/en/v12/references/api.html
paths:
  /units_of_measure:
    patch:
      tags:
        - Lookups
      summary: 'Reference units. Not tenant-scoped: a millimetre is a millimetre.'
      parameters:
        - $ref: '#/components/parameters/rowFilter.units_of_measure.id'
        - $ref: '#/components/parameters/rowFilter.units_of_measure.code'
        - $ref: '#/components/parameters/rowFilter.units_of_measure.name'
        - $ref: '#/components/parameters/rowFilter.units_of_measure.category'
        - $ref: '#/components/parameters/rowFilter.units_of_measure.is_active'
        - $ref: '#/components/parameters/preferReturn'
      requestBody:
        $ref: '#/components/requestBodies/units_of_measure'
      responses:
        '204':
          description: No Content
components:
  parameters:
    rowFilter.units_of_measure.id:
      in: query
      name: id
      required: false
      schema:
        type: string
    rowFilter.units_of_measure.code:
      in: query
      name: code
      required: false
      schema:
        type: string
    rowFilter.units_of_measure.name:
      in: query
      name: name
      required: false
      schema:
        type: string
    rowFilter.units_of_measure.category:
      in: query
      name: category
      required: false
      schema:
        type: string
    rowFilter.units_of_measure.is_active:
      in: query
      name: is_active
      required: false
      schema:
        type: string
    preferReturn:
      description: Preference
      in: header
      name: Prefer
      required: false
      schema:
        enum:
          - return=representation
          - return=minimal
          - return=none
        type: string
  requestBodies:
    units_of_measure:
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/units_of_measure'
        application/vnd.pgrst.object+json:
          schema:
            $ref: '#/components/schemas/units_of_measure'
        application/vnd.pgrst.object+json;nulls=stripped:
          schema:
            $ref: '#/components/schemas/units_of_measure'
        text/csv:
          schema:
            $ref: '#/components/schemas/units_of_measure'
      description: units_of_measure
  schemas:
    units_of_measure:
      description: 'Reference units. Not tenant-scoped: a millimetre is a millimetre.'
      properties:
        category:
          format: character varying
          maxLength: 50
          type: string
        code:
          format: character varying
          maxLength: 30
          type: string
        id:
          description: |-
            Note:
            This is a Primary Key.<pk/>
          format: uuid
          type: string
        is_active:
          format: boolean
          type: boolean
        name:
          format: character varying
          maxLength: 100
          type: string
      type: object

````

## Related topics

- [Labels](/config/labels.md)
- [Reliability](/assets/reliability.md)
- [Role reference](/setup/roles.md)
- [Organisation settings](/setup/organisation.md)
- [Finding your way around](/get-started/navigating.md)