Update product variant

PUT/api/v1/inventory/products/variants/{id}

Update an existing variant.

Operation ID: update_variant·View as markdown·OpenAPI slice

Authentication

Bearer token authentication. Pass your DayZero API token in the Authorization header and the target business UUID in x-business-id.

Parameters

Path

idstring · uuidrequired

Request body

Schema: VariantUpdateRequest

idstring: Variant UUID (set from URL path).
product_idstring: UUID of the parent product to move this variant under (re-parent). The target product must belong to the same business and must not be archived.
unit_priceinteger: Sale price in cents (e.g., 2999 = $29.99).
namestring: Variant name (e.g., 'Large - Blue').
skustring: Stock Keeping Unit for inventory tracking.
manufacturer_skustring: Manufacturer's SKU for ordering from suppliers.
barcodestring: Scannable barcode (UPC/EAN/QR). Distinct from SKU.
unit_costinteger: Cost price in cents for margin calculations.
unit_cost_precisenumber: Precise unit cost in dollars with sub-cent precision (e.g. 0.0478).
uomstring: Unit of measure: EA, LB, G, KG, OZ, L, ML, etc.
inventory_categorystring: Which inventory ledger this item's cost sits in: raw_material, packaging or finished_good. Production runs and counts post by it.
default_vendor_idstring: UUID of the preferred vendor for this variant.
tax_code_idstring: UUID of the tax code that decides whether this variant is charged sales tax on invoices (a non-taxable code such as Exempt keeps the default tax rate off it). Send null to clear it, which leaves the variant taxable.
archivedboolean: Set to true to archive (hide) the variant.
initial_inventory_quantityinteger: Set initial inventory count (use when first setting up).
initial_inventory_quantity_datestring · date-time: Date for the initial inventory count (ISO 8601).

Responses

200Variant updated successfully

Schema: SuccessEnvelope_VariantResponse_

successboolean
messagestring
codestring
dataVariantResponse

400Bad request - invalid data

Schema: ErrorResponse

errorstringrequired: Error category: validation_error, unauthorized, forbidden, not_found, conflict, rate_limited, server_error, or service_unavailable.
messagestringrequired: Human-readable explanation, safe to show to end users.
codestringrequired: Stable machine-readable code in CATEGORY_NNN form (e.g. NOT_FOUND_006, AUTH_010, GEN_002).
request_idstring: Correlation id for support requests. Echoes the x-request-id request header when one was supplied.
errorsobject: Field-level validation messages keyed by field name. Present on 400/422 validation failures only.

401Unauthorized - Missing or expired token, an MCP OAuth token used against the REST API, or no access to this business

Schema: ErrorResponse

errorstringrequired: Error category: validation_error, unauthorized, forbidden, not_found, conflict, rate_limited, server_error, or service_unavailable.
messagestringrequired: Human-readable explanation, safe to show to end users.
codestringrequired: Stable machine-readable code in CATEGORY_NNN form (e.g. NOT_FOUND_006, AUTH_010, GEN_002).
request_idstring: Correlation id for support requests. Echoes the x-request-id request header when one was supplied.
errorsobject: Field-level validation messages keyed by field name. Present on 400/422 validation failures only.

403Forbidden - Insufficient permissions

Schema: ErrorResponse

errorstringrequired: Error category: validation_error, unauthorized, forbidden, not_found, conflict, rate_limited, server_error, or service_unavailable.
messagestringrequired: Human-readable explanation, safe to show to end users.
codestringrequired: Stable machine-readable code in CATEGORY_NNN form (e.g. NOT_FOUND_006, AUTH_010, GEN_002).
request_idstring: Correlation id for support requests. Echoes the x-request-id request header when one was supplied.
errorsobject: Field-level validation messages keyed by field name. Present on 400/422 validation failures only.

404Business or variant not found

Schema: ErrorResponse

errorstringrequired: Error category: validation_error, unauthorized, forbidden, not_found, conflict, rate_limited, server_error, or service_unavailable.
messagestringrequired: Human-readable explanation, safe to show to end users.
codestringrequired: Stable machine-readable code in CATEGORY_NNN form (e.g. NOT_FOUND_006, AUTH_010, GEN_002).
request_idstring: Correlation id for support requests. Echoes the x-request-id request header when one was supplied.
errorsobject: Field-level validation messages keyed by field name. Present on 400/422 validation failures only.

422Validation error

Schema: ErrorResponse

errorstringrequired: Error category: validation_error, unauthorized, forbidden, not_found, conflict, rate_limited, server_error, or service_unavailable.
messagestringrequired: Human-readable explanation, safe to show to end users.
codestringrequired: Stable machine-readable code in CATEGORY_NNN form (e.g. NOT_FOUND_006, AUTH_010, GEN_002).
request_idstring: Correlation id for support requests. Echoes the x-request-id request header when one was supplied.
errorsobject: Field-level validation messages keyed by field name. Present on 400/422 validation failures only.

Code samples

PUT/api/v1/inventory/products/variants/{id}

bash

curl -X PUT 'https://api.ondayzero.com/api/v1/inventory/products/variants/{id}' \
  -H 'Authorization: Bearer dz_your_token' \
  -H 'x-business-id: YOUR_BUSINESS_ID' \
  -H 'Content-Type: application/json' \
  -d '{
  "sku": "WIDGET-PRO-LG-BLU",
  "unit_cost": 1500,
  "unit_price": 3499
}'