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POST
/
customer-invoices
/
manual
Create manual Customer Invoice
curl --request POST \
  --url https://api.mijnklantportaal.nl/v1/customer-invoices/manual \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "customerId": "cst_abc12345def678",
  "invoiceNumber": "2015-001",
  "issuedAt": "2025-04-14",
  "lines": [
    {
      "description": "Website template",
      "amountExclVat": "12.95",
      "vatRate": 21
    }
  ],
  "sendNotification": true
}
'
{
  "id": "inv_abc12345def678",
  "customerId": "cst_abc12345def678",
  "invoiceNumber": "2024-001",
  "issuedAt": "2024-04-29",
  "currency": "EUR",
  "amount": "12.95",
  "paidAt": "2024-05-28T21:00:00+02:00",
  "createdAt": "2024-04-29T21:00:00+02:00",
  "links": {
    "customer": {
      "href": "https://api.mijnklantportaal.nl/v1/customers/cst_abc12345def678",
      "type": "<string>"
    }
  }
}

Authorizations

​
Authorization
string
header
required

Bearer authentication header of the form Bearer <token>, where <token> is your auth token.

Body

application/json
​
customerId
string
required

ID of the customer this offer is meant for

Example:

"cst_abc12345def678"

​
invoiceNumber
string
required

Number of the invoice, as string

Example:

"2015-001"

​
issuedAt
string
required

Date when the invoice is issued, in YYYY-mm-dd format

Example:

"2025-04-14"

​
lines
object[]
required

Line in this invoice

​
sendNotification
boolean

Indicates if MijnKlantportaal should send out the notification to inform the customer about the new invoice

Example:

true

Response

Getting the created Customer Invoice

Customer Invoice

​
id
string

ID of the invoice, always starting with inv_.

Example:

"inv_abc12345def678"

​
customerId
string

ID of the customer which the invoice belongs to.

Example:

"cst_abc12345def678"

​
invoiceNumber
string

Number of the invoice as string.

Example:

"2024-001"

​
issuedAt
string

Issue date of the invoice. Formatted as YYYY-mm-dd.

Example:

"2024-04-29"

​
currency
string

Currency of the invoice amount.

Example:

"EUR"

​
amount
string

Invoice amount as string.

Example:

"12.95"

​
paidAt
string | null

Date the invoice is marked as paid. Written in ATOM format.

Example:

"2024-05-28T21:00:00+02:00"

​
createdAt
string

Date and time when the invoice was added to MijnKlantportaal. Written in ATOM format.

Example:

"2024-04-29T21:00:00+02:00"

​
links
object