> ## Documentation Index > Fetch the complete documentation index at: https://docs.joinluminous.com/llms.txt > Use this file to discover all available pages before exploring further. # Update custom field values > Update custom field values for a specific record. Supported record types: `sales-orders`,`sales-order-items`,`invoices`,`products` Values must match the field type (string, number, date, or dropdown). Custom fields must be set up in Luminous before they can be updated or retrieved. Log into your Luminous account, then via the left navigation select Manage > Custom Fields. ## OpenAPI ````yaml /api-reference/build.yaml put /{recordType}/{recordId}/custom-fields openapi: 3.0.0 info: title: Luminous API version: 1.0.0 description: API documentation for Luminous servers: - url: https://{companyName}.api.joinluminous.com/external/api/v1 variables: companyName: default: companyName description: Your company-specific subdomain security: [] tags: - name: Products description: Get and manage products - name: Pricing description: Manage price schedules, levels, and customizations - name: BOMs description: Manage Bills of Materials (BOMs) - name: Labels description: Label rendering via Labelary ZPL service - name: Companies description: Manage business accounts and their associated data - name: Contacts description: Manage contact information for individuals - name: Suppliers description: Manage suppliers (factories) — vendors used on purchase orders - name: Supplier SKUs description: Manage per-supplier SKU and unit-cost overrides for products - name: Locations description: Manage warehouses and locations - name: Inventory description: Get and adjust product stock levels - name: Lots description: Create, update, and delete product lots (batches) - name: Transfer Orders description: Manage transfer orders - name: Fulfillment Orders description: Manage fulfillment orders and picklists - name: Purchase Orders description: Get and modify purchase orders - name: Receiving Reports description: Manage receiving reports - name: Payment Obligations description: Manage payment obligations for purchase orders - name: Sales Orders description: Manage sales orders and sales order shipments - name: Purgatory description: >- Inspect and resolve non-posted sales orders in the purgatory staging workflow - name: PickFlow Shipping description: >- Provider-agnostic shipping rates, services, packages, and label purchase for PickFlow - name: Cycle Counts description: >- Create, drive, and post PickFlow cycle counts — batches, per-warehouse sessions, and CSV import/export - name: Print Stations description: List paired print stations and enqueue print jobs to them - name: Invoices description: Get and manage invoices - name: Work Orders description: >- Manage work orders — production lifecycle, steps, materials, links, shipments, and comments - name: Production Batches description: Group and manage work orders as production batches - name: Bills description: >- Accounts payable bill management, payments, attachments, allocations, and variance - name: Prepayments description: Manage vendor prepayments and applications - name: Vendor Credits description: Manage vendor credits and applications - name: Vendor Returns description: Manage vendor returns and credit generation - name: Customer Returns description: Manage customer returns (sales returns), receiving, and restock behavior - name: Stock Snapshot description: Point-in-time stock snapshots with export support - name: Consumption description: Consumption reports and exports - name: Inventory Aging description: Cost-layer-based inventory aging reports - name: Bills Reports description: Accounts payable bills aging reports - name: Forecast description: Materialized forecast data - name: Reports description: Close the books, inventory discrepancy, transaction COGS, and EDI reports - name: Tags description: Add/remove tags across various resources - name: Custom Fields description: Get and set custom fields across various resources - name: Currency description: Currency configuration, exchange rates, and conversion - name: Integration Mappings description: Manage integration mappings for external systems - name: Integration Field Mappings description: Manage field-level mappings between Luminous and external systems paths: /{recordType}/{recordId}/custom-fields: put: tags: - Custom Fields summary: Update custom field values description: > Update custom field values for a specific record. Supported record types: `sales-orders`,`sales-order-items`,`invoices`,`products` Values must match the field type (string, number, date, or dropdown). Custom fields must be set up in Luminous before they can be updated or retrieved. Log into your Luminous account, then via the left navigation select Manage > Custom Fields. operationId: updateCustomFields parameters: - in: path name: recordType required: true schema: type: string enum: - sales-orders - sales-order-items - invoices - products description: Type of record to update custom fields for - in: path name: recordId required: true schema: type: integer description: ID of the record requestBody: required: true content: application/json: schema: type: object additionalProperties: oneOf: - type: string - type: number example: Customer PO: PO-98765 Expected Delivery: '2024-12-25' Priority Level: High Item Count: 42 responses: '200': description: Custom fields updated successfully content: application/json: schema: type: object properties: message: type: string example: Custom fields updated successfully '422': description: Validation error content: application/json: schema: type: object properties: message: type: string '500': description: Server error content: application/json: schema: type: object properties: message: type: string security: - BearerAuth: [] components: securitySchemes: BearerAuth: type: http scheme: bearer description: >- Authenticate using a bearer token. To create a token, navigate to /settings/api-tokens and click Create API Token. ````