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POST
/
accounting
/
items
cURL
curl --request POST \
  --url https://api.maesn.dev/accounting/items \
  --header 'Content-Type: application/json' \
  --header 'X-ACCOUNT-KEY: <x-account-key>' \
  --header 'X-API-KEY: <x-api-key>' \
  --data '
{
  "assetAccountId": "80",
  "expenseAccountId": "81",
  "incomeAccountId": "79",
  "inventoryStartDate": "2021-01-01",
  "itemNumber": "12345-A",
  "name": "Handmade Plastic Chair",
  "priceIncludesTax": true,
  "stockCount": 11,
  "taxCode": "TAX19",
  "taxRatePercentage": 19,
  "type": "PRODUCT",
  "unitName": "PIECE",
  "unitPurchasePrice": 10,
  "unitSalesPrice": 20.5
}
'
{
  "meta": {
    "warnings": [
      "Field not used by target system"
    ],
    "pagination": {
      "total": 125,
      "perPage": 50,
      "currentPage": 1,
      "totalPages": 3
    }
  },
  "data": {
    "id": "02c74e8a-b95b-ef11-bfe2-002248e5aac5",
    "assetAccountId": "80",
    "expenseAccountId": "81",
    "incomeAccountId": "79",
    "inventoryStartDate": "2021-01-01",
    "itemNumber": "12345-A",
    "lastModifiedDate": "2021-01-01T00:00:00Z",
    "name": "Handmade Plastic Chair",
    "priceIncludesTax": true,
    "stockCount": 11,
    "taxCode": "TAX19",
    "taxRatePercentage": 19,
    "type": "PRODUCT",
    "unitName": "PIECE",
    "unitPurchasePrice": 10,
    "unitSalesPrice": 20.5
  }
}

​
Field support per integration

If you’re not using the Interactive Authentication Flow, make sure the query parameters environmentName and companyId are correctly populated. You can obtain these values by using the GET Environments and GET Companies endpoints available under the Authentication section.
Supported Request Parameters:
​
itemNumber
string
​
name
string
required
​
priceIncludesTax
boolean
​
type
enum
Available options: PRODUCT, SERVICE
​
unitName
string
​
unitPurchasePrice
number
​
unitSalesPrice
number
Supported Request Parameters:
​
assetAccountId
string
​
expenseAccountId
string
​
incomeAccountId
string
​
inventoryStartDate
string
​
itemNumber
string
​
name
string
required
​
stockCount
number
​
type
enum
required
Available options: PRODUCT, SERVICE
​
unitPurchasePrice
number
​
unitSalesPrice
number
If you’re not using the Interactive Authentication Flow, make sure the query parameter companyId is correctly populated. You can obtain this value by using the GET Companies endpoint available under the Authentication section. Please use the id field as the companyId.
Supported Request Parameters:
​
itemNumber
string
required
​
name
string
required
​
type
enum
Available options: PRODUCT, SERVICE
​
unitSalesPrice
number
​
unitName
enum
Available options: HOUR, KILOGRAM, LITRE, METRE, MILLILITRE, MILLIGRAM, PACK, SQUARE_METRE, TONNE, UNIT, CUBIC_METRE, DAY, GRAM, KILOMETRE, MONTH, NIGHT, NOT_UNIT, PERCENTAGE
Customized values are supported.

Headers

​
X-API-KEY
string
required

API key

​
X-ACCOUNT-KEY
string
required

Account key

Query Parameters

​
companyId
string
​
environmentName
string

Body

application/json
​
assetAccountId
string
Example:

"80"

​
expenseAccountId
string
Example:

"81"

​
incomeAccountId
string
Example:

"79"

​
inventoryStartDate
string
Example:

"2021-01-01"

​
itemNumber
string
Example:

"12345-A"

​
name
string
Example:

"Handmade Plastic Chair"

​
priceIncludesTax
boolean
Example:

true

​
stockCount
number
Example:

11

​
taxCode
string
Example:

"TAX19"

​
taxRatePercentage
number
Example:

19

​
type
enum<string>
Available options:
PRODUCT,
SERVICE
Example:

"PRODUCT"

​
unitName
Available options:
PIECE,
STÜCK,
NOT_UNIT,
CUBIC_METRE,
DAY,
GRAM,
HOUR,
KILOGRAM,
KILOMETRE,
LITRE,
METRE,
MILLIGRAM,
MILLILITRE,
MONTH,
NIGHT,
PACK,
PERCENTAGE,
SQUARE_METRE,
TONNE,
UNIT
Example:

"PIECE"

​
unitPurchasePrice
number
Example:

10

​
unitSalesPrice
number
Example:

20.5

Response

200 - application/json
​
meta
object
​
data
object
Last modified on June 10, 2026