Create an inventory revaluation

Operation ID: createInventoryRevaluation

Group: Inventory › Inventory Revaluations

POST /inventory/inventory-revaluations

Retry-safe: A write that accepts Idempotency-Key: repeating a request with the same key replays the stored answer instead of executing twice.

Creates an inventory revaluation as a draft. The revaluation gives the stock of one or more items a new unit cost, with each line in its own warehouse. No stock value changes until you commit the revaluation with POST inventory/inventory-revaluations/:id/commit.

Each line states what the stock is valued at now, in currentUnitCost, and what it should be valued at, in newUnitCost. The API doesn't look up currentUnitCost, and refuses only a negative value.

Read currentUnitCost from GET inventory/inventory-levels for the same item and warehouse. A wrong current cost puts the wrong difference in the journal entry.

The response is the created revaluation with its lines, in the same shape as GET inventory/inventory-revaluations/:id.

Parameters

Name	In	Type	Required	Description
`Api-Version`	header	string · v1	yes	The API version this request targets, named by its public identifier. Required on every request; omitting it, or naming a version this company does not have, is answered with 400. This document describes version `v1`.
`Idempotency-Key`	header	string	no	An opaque caller-chosen string (1-255 characters) that makes this request safe to retry. Repeating the same key with an identical request body replays the original response instead of re-executing - but only once that original request succeeded; a failed attempt re-executes on retry. Repeating the key with a different body is answered with 422. A key still in flight is answered with 409 - as is a key whose original request was interrupted before it finished, for a few minutes afterwards, until that attempt is presumed dead. A completed response stays replayable for 24 hours. The key is scoped to the caller, not to the action: reusing it for a different action is answered with 409 or 422 rather than treated independently. On read actions this header is ignored. On write actions that cannot offer the guarantee it is answered with `400 IDEMPOTENCY_NOT_SUPPORTED` rather than silently ignored.

Request body

Required, application/json: createInventoryRevaluationInput.

Field	Type	Required	Description
`costingValuationType`	string	yes	How the value change is recorded. Accepted values: 'revaluation', 'directCostCapitalisation'. 'revaluation' restates the cost outright, and 'directCostCapitalisation' adds a cost that was expensed elsewhere onto the stock. Example: `"revaluation"`.
`costingElementTypeId`	string	yes	The unique identifier for the costing element type the cost breakdown rows are recorded against. Required, because the commit refuses a document without one. Example: `"f2a58c31-9d47-4e06-8b25-3c7f1a94e5d8"`.
`entityId`	string	no	The unique identifier for the legal entity. Defaults to the entity that owns the first line's warehouse. See id on GET base/entities.
`documentDate`	date	no	The date to date the revaluation. Defaults to today. Use format YYYY-MM-DD.
`capitalisationExpenseAccountId`	string	no	The unique identifier for the general ledger account the expense comes off. Required when costingValuationType is 'directCostCapitalisation'. See id on GET accounting/chart-of-accounts/:id.
`reasonCodeId`	string	no	The unique identifier for a reason code. See id on GET inventory/reason-codes/:id.
`notes`	string	no	Free text on the revaluation.
`lines`	array<object>	yes	The lines of the revaluation. At least one is required. Example: `[{"itemId":"517a93e4-cbb4-4571-9e3d-2343e56cfd84","locationId":"b6f0d2a4-77c1-4e39-8a52-0c4e1f9b73d5","unitId":"d5a71e93-4c08-4b26-95f7-2e6a8c30b41f","quantity":"150","currentUnitCost":"12","newUnitCost":"9"}]`.
`lines[].itemId`	string	yes	The unique identifier for the item to revalue. See id on GET inventory/items/:id.
`lines[].locationId`	string	yes	The unique identifier for the warehouse whose stock is being restated. There is no document-level warehouse, so every line names its own. See id on GET inventory/warehouses/:id.
`lines[].unitId`	string	yes	The unique identifier for the unit the quantity is in. Required: without it the platform falls back to whichever unit is first in the tenant. See id on GET inventory/unit-of-measures/:id.
`lines[].quantity`	decimal	yes	How much stock this line restates. Must be greater than zero.
`lines[].currentUnitCost`	decimal	yes	What the stock is carried at today, in the legal entity's functional currency. Read it from GET inventory/inventory-levels for the same item and warehouse, since it is checked and never looked up, and a guess posts the wrong difference. Zero is accepted and a negative cost is not.
`lines[].newUnitCost`	decimal	yes	What it should be carried at after this posts, in the legal entity's functional currency.
`lines[].previousAfterSaleCost`	decimal	no	The accrued after-sale cost before this document. Moving-average direct cost capitalization only.
`lines[].newAfterSaleCost`	decimal	no	The after-sale cost to capitalize. Moving-average direct cost capitalization only.
`lines[].notes`	string	no	Free text on the line.
`lines[].batches`	array<object>	no	The batches being restated. Their quantities must add up to the line's quantity.
`lines[].batches[].batchNumberId`	string	no	The unique identifier for the batch. See id on GET inventory/batch-numbers. Either this or batchNumber is required.
`lines[].batches[].batchNumber`	string	no	The batch number as printed. Either this or batchNumberId is required; alone, it must name exactly one batch of the item in the line's warehouse. Given beside batchNumberId, it must be that batch's own number.
`lines[].batches[].quantity`	decimal	yes	How much of the line this batch accounts for.
`lines[].batches[].currentUnitCost`	decimal	no	What this batch is carried at today.
`lines[].batches[].newUnitCost`	decimal	no	What it should be carried at.
`lines[].serials`	array<object>	no	The serialized units being restated, one entry per unit.
`lines[].serials[].serialNumberId`	string	no	The unique identifier for the unit. See id on GET inventory/serial-numbers. Either this or serialNumber is required.
`lines[].serials[].serialNumber`	string	no	The serial number stamped on the unit. Either this or serialNumberId is required; alone, it must name exactly one unit of the item in the line's warehouse. Given beside serialNumberId, it must be that unit's own number.
`lines[].serials[].currentUnitCost`	decimal	no	What this unit is carried at today.
`lines[].serials[].newUnitCost`	decimal	no	What it should be carried at.
`lines[].serials[].previousAfterSaleCost`	decimal	no	The unit's accrued after-sale cost before this document.
`lines[].serials[].newAfterSaleCost`	decimal	no	The after-sale cost to capitalize on it.

{
  "costingValuationType": "revaluation",
  "costingElementTypeId": "f2a58c31-9d47-4e06-8b25-3c7f1a94e5d8",
  "entityId": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
  "documentDate": "2026-01-15",
  "capitalisationExpenseAccountId": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
  "reasonCodeId": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
  "notes": "<notes>",
  "lines": [
    {
      "itemId": "517a93e4-cbb4-4571-9e3d-2343e56cfd84",
      "locationId": "b6f0d2a4-77c1-4e39-8a52-0c4e1f9b73d5",
      "unitId": "d5a71e93-4c08-4b26-95f7-2e6a8c30b41f",
      "quantity": "150",
      "currentUnitCost": "12",
      "newUnitCost": "9"
    }
  ]
}

Response

200 Success

Under data (createInventoryRevaluationOutput):

Field	Type	Required	Description
`id`	string	yes	The unique identifier for the revaluation. Example: `"8e4b17c0-5d92-4a63-b0f7-1c8e35a029d4"`.
`documentNumber`	string	no	The revaluation's document number, for example 'REV-1187'. Example: `"REV-1187"`.
`documentStatus`	string	yes	The status of the revaluation. Possible values: 'DRAFT', 'COMMITTED', 'CANCELLED'. Example: `"DRAFT"`.
`documentDate`	date	no	The date the revaluation is dated. Format YYYY-MM-DD. Example: `"2026-08-18"`.
`entityId`	string	no	The unique identifier for the legal entity whose books this moves. See id on GET base/entities. Example: `"1a9c4e70-38b5-4d26-9f01-7c2e5b8a6d43"`.
`entityName`	string	no	The display name of that legal entity. Example: `"Acme Netherlands B.V."`.
`costingValuationType`	string	no	How the value change is recorded. Possible values: 'revaluation', 'directCostCapitalisation'. 'revaluation' restates the cost outright, and 'directCostCapitalisation' adds a cost that was expensed elsewhere onto the stock. Example: `"revaluation"`.
`capitalisationExpenseAccountId`	string	no	The unique identifier for the general ledger account a direct cost capitalization takes the expense off. Absent on an ordinary revaluation. See id on GET accounting/chart-of-accounts/:id.
`costingElementTypeId`	string	no	The unique identifier for the costing element type the cost breakdown rows are recorded against. Required to commit. Example: `"f2a58c31-9d47-4e06-8b25-3c7f1a94e5d8"`.
`reasonCodeId`	string	no	The unique identifier for the reason code, when one was given. See id on GET inventory/reason-codes/:id.
`reasonCode`	string	no	The code of that reason code.
`reasonCodeDescription`	string	no	The description of that reason code.
`currency`	string	no	The currency of every amount on the revaluation, the legal entity's functional currency. Format ISO 4217, for example 'EUR'. Example: `"EUR"`.
`totalRevaluationAmount`	decimal	no	The sum of every line's revaluationAmount, in the revaluation's currency. This is what the document moves on the balance sheet. Example: `"-450"`.
`active`	boolean	no	Whether the document is active.
`notes`	string	no	Free text on the revaluation.
`lineCount`	number	no	How many lines the revaluation has. Example: `1`.
`createdDate`	date-time	no	The date and time the revaluation was created, in UTC. Format YYYY-MM-DDTHH:mm:ss.sssZ.
`lastModifiedDate`	date-time	no	The date and time the revaluation record last changed, in UTC. Format YYYY-MM-DDTHH:mm:ss.sssZ. Example: `"2026-08-18T09:14:22.517Z"`.
`lines`	array<object>	no	The lines of the created revaluation. Example: `[{"id":"6c2f9a41-7b58-4d30-91e6-4a0d8c25f3b7","itemId":"517a93e4-cbb4-4571-9e3d-2343e56cfd84","itemCode":"WIDGET-01","locationCode":"WH-CENTRAL","unitCode":"EA","quantity":"150","currentUnitCost":"12","newUnitCost":"9","revaluationAmount":"-450"}]`.
`lines[].id`	string	yes	The unique identifier for the revaluation line. Pass it in updateLines or deleteLines on PATCH inventory/inventory-revaluations/:id to change or remove the line.
`lines[].itemId`	string	no	The unique identifier for the item being revalued. See id on GET inventory/items/:id.
`lines[].itemCode`	string	no	The code of that item.
`lines[].itemName`	string	no	The display name of that item.
`lines[].locationId`	string	no	The unique identifier for the warehouse whose stock this line restates. The same item may be carried at a different cost in each warehouse. See id on GET inventory/warehouses/:id.
`lines[].locationCode`	string	no	The code of that warehouse.
`lines[].locationName`	string	no	The display name of that warehouse.
`lines[].unitId`	string	no	The unique identifier for the unit the quantity is in. See id on GET inventory/unit-of-measures/:id.
`lines[].unitCode`	string	no	The code of that unit.
`lines[].quantity`	decimal	no	How much stock this line restates the cost of, in the line's unit.
`lines[].inventoryQuantity`	decimal	no	The same amount in the item's stocking unit.
`lines[].currentUnitCost`	decimal	no	What the stock is carried at today, in the revaluation's currency. You supply it and the platform checks it rather than deriving it. Read it from GET inventory/inventory-levels.
`lines[].newUnitCost`	decimal	no	What it should be carried at after this posts, in the revaluation's currency.
`lines[].previousAfterSaleCost`	decimal	no	The accrued after-sale cost before this document, in the revaluation's currency. Moving-average direct cost capitalization only.
`lines[].newAfterSaleCost`	decimal	no	The after-sale cost to capitalize, in the revaluation's currency. Moving-average direct cost capitalization only.
`lines[].revaluationAmount`	decimal	no	The value this line moves on the balance sheet, in the revaluation's currency: (newUnitCost - currentUnitCost) x quantity.
`lines[].status`	string	no	Where the line sits in the platform's own process. This is free text with no fixed set of values.
`lines[].notes`	string	no	Free text on the line.
`lines[].batches`	array<object>	no	The batches being restated. Their quantities must add up to the line's quantity.
`lines[].batches[].batchNumberId`	string	no	The unique identifier for the batch number.
`lines[].batches[].batchNumber`	string	no	The batch number itself.
`lines[].batches[].quantity`	decimal	no	How much of the line this batch accounts for.
`lines[].batches[].currentUnitCost`	decimal	no	What this batch is carried at today, in the revaluation's currency.
`lines[].batches[].newUnitCost`	decimal	no	What it should be carried at.
`lines[].serials`	array<object>	no	The serialized units being restated, one entry per unit, so there must be exactly as many as the quantity says.
`lines[].serials[].serialNumberId`	string	no	The unique identifier for the serial number.
`lines[].serials[].serialNumber`	string	no	The serial number itself.
`lines[].serials[].currentUnitCost`	decimal	no	What this unit is carried at today, in the revaluation's currency.
`lines[].serials[].newUnitCost`	decimal	no	What it should be carried at.
`lines[].serials[].previousAfterSaleCost`	decimal	no	The unit's accrued after-sale cost before this document. Direct cost capitalization on a sold serial only.
`lines[].serials[].newAfterSaleCost`	decimal	no	The after-sale cost to capitalize on it.

{
  "data": {
    "id": "8e4b17c0-5d92-4a63-b0f7-1c8e35a029d4",
    "documentNumber": "REV-1187",
    "documentStatus": "DRAFT",
    "documentDate": "2026-08-18",
    "entityId": "1a9c4e70-38b5-4d26-9f01-7c2e5b8a6d43",
    "entityName": "Acme Netherlands B.V.",
    "costingValuationType": "revaluation",
    "capitalisationExpenseAccountId": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
    "costingElementTypeId": "f2a58c31-9d47-4e06-8b25-3c7f1a94e5d8",
    "reasonCodeId": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
    "reasonCode": "<reasonCode>",
    "reasonCodeDescription": "<reasonCodeDescription>",
    "currency": "EUR",
    "totalRevaluationAmount": "-450",
    "active": true,
    "notes": "<notes>",
    "lineCount": 1,
    "createdDate": "2026-01-15T09:30:00.000Z",
    "lastModifiedDate": "2026-08-18T09:14:22.517Z",
    "lines": [
      {
        "id": "6c2f9a41-7b58-4d30-91e6-4a0d8c25f3b7",
        "itemId": "517a93e4-cbb4-4571-9e3d-2343e56cfd84",
        "itemCode": "WIDGET-01",
        "locationCode": "WH-CENTRAL",
        "unitCode": "EA",
        "quantity": "150",
        "currentUnitCost": "12",
        "newUnitCost": "9",
        "revaluationAmount": "-450"
      }
    ]
  },
  "diagnostics": [
    {
      "code": "<code>",
      "message": "<message>",
      "severity": "error",
      "path": [
        "<path>"
      ],
      "details": "<details>"
    }
  ]
}

Response headers

Idempotency-Replayed — Present and true only when this response replays a previously stored one for the same Idempotency-Key, rather than reflecting a live execution. Absent on a live response - never sent as false.

Errors

Code	Status
`REFERENCE_NOT_FOUND`	400
`NO_LINES`	400
`INVALID_QUANTITY`	400
`MISSING_CAPITALISATION_ACCOUNT`	400
`TRACKING_MISMATCH`	400
`POSTING_REJECTED`	400
`IDEMPOTENCY_KEY_CONFLICT`	409
`IDEMPOTENCY_PAYLOAD_MISMATCH`	422

Statuses

400 — Invalid request or business failure. Codes: REFERENCE_NOT_FOUND, NO_LINES, INVALID_QUANTITY, MISSING_CAPITALISATION_ACCOUNT, TRACKING_MISMATCH, POSTING_REJECTED
401 — The request carries no valid access token.
403 — Not authorized
404 — Not found
409 — The Idempotency-Key is still being processed by another request.
422 — The Idempotency-Key was already used with a different request payload.
429 — Too many requests from this client address. The response has no body and no Retry-After header.
500 — Internal server error