> ## 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 per-line COGS from unit cost > Applies `cost_per_unit` to matching sales lines: sets line total cost (quantity × unit cost), updates linked sales item cost layers, and rolls up parent order item costs. This is the same behavior as the admin Transaction COGS SKU-to-period import. Exactly one of three modes is selected via `mode`: ### Mode: `sales_item_ids` Directly target specific sales item IDs with a given cost per unit. ### Mode: `sku_date_range` Matches lines with the product SKU whose parent order **ship date** falls within `from_date`–`to_date` (inclusive). ### Mode: `order_ids` Targets specific internal sales order IDs. Optional `sku` limits to that product on those orders. ## OpenAPI ````yaml /api-reference/build.yaml post /transaction-cogs/update-costs 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: /transaction-cogs/update-costs: post: tags: - Reports summary: Update per-line COGS from unit cost description: > Applies `cost_per_unit` to matching sales lines: sets line total cost (quantity × unit cost), updates linked sales item cost layers, and rolls up parent order item costs. This is the same behavior as the admin Transaction COGS SKU-to-period import. Exactly one of three modes is selected via `mode`: ### Mode: `sales_item_ids` Directly target specific sales item IDs with a given cost per unit. ### Mode: `sku_date_range` Matches lines with the product SKU whose parent order **ship date** falls within `from_date`–`to_date` (inclusive). ### Mode: `order_ids` Targets specific internal sales order IDs. Optional `sku` limits to that product on those orders. operationId: updateTransactionCogsCosts requestBody: required: true content: application/json: schema: oneOf: - type: object title: By Sales Item IDs required: - mode - sales_item_ids - cost_per_unit properties: mode: type: string enum: - sales_item_ids description: Selection mode sales_item_ids: type: array items: type: integer minItems: 1 description: Array of sales item IDs to update cost_per_unit: type: number description: Cost per unit to apply - type: object title: By SKU + Date Range required: - mode - sku - from_date - to_date - cost_per_unit properties: mode: type: string enum: - sku_date_range description: Selection mode sku: type: string description: Product SKU (internal SKU) from_date: type: string format: date description: Start of ship date range (inclusive) to_date: type: string format: date description: End of ship date range (inclusive) cost_per_unit: type: number description: Cost per unit to apply - type: object title: By Order IDs required: - mode - order_ids - cost_per_unit properties: mode: type: string enum: - order_ids description: Selection mode order_ids: type: array items: type: integer minItems: 1 description: Internal sales order IDs sku: type: string description: >- Optional SKU to limit updates to a specific product on these orders cost_per_unit: type: number description: Cost per unit to apply examples: by_sales_item_ids: summary: Update specific sales items value: mode: sales_item_ids sales_item_ids: - 101 - 102 - 103 cost_per_unit: 12.5 by_sku_date_range: summary: Update by SKU and date range value: mode: sku_date_range sku: WIDGET-001 from_date: '2025-01-01' to_date: '2025-03-31' cost_per_unit: 8.75 by_order_ids: summary: Update by order IDs value: mode: order_ids order_ids: - 5001 - 5002 sku: GADGET-XL cost_per_unit: 22 responses: '200': description: Number of sales lines updated content: application/json: schema: type: object required: - updated_count properties: updated_count: type: integer minimum: 0 description: Number of sales lines that were updated example: updated_count: 47 '400': description: Bad request content: application/json: schema: type: object properties: message: type: string '401': description: Unauthorized content: application/json: schema: type: object properties: message: type: string '422': description: >- Business rule failure (e.g. SKU not found, no matching lines, invalid date range) 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. ````