List Invoices of a Customer
GET/customers/ {customerId}/ invoices/ 
v2
GET
invoice-list-customer-invoices
Request
- customerIdstringrequired
 
Responses
Response headers
- X-Pagination-Limitinteger
The limit used to select the resources for the response
 - X-Pagination-Skipinteger
The number of skipped items
 - X-Pagination-Pagenumber
The calculate page of the list response. Refer to parameters to learn more.
 - X-Pagination-TotalCountinteger
The total amount of items available in the remote ressource. Use this value in combination with the limit to calculate the available pages.
 
application/json
- Schema documentation
 - Example
 - JSON Schema
 
- Array[
 - *object
- amountPaidnumberrequired
 - cancellationobject
- cancellationIdstring (uuid)required
 - cancelledAtstring (date-time)required
 - correctionNumberstringrequired
 - pdfIdstring (uuid)required
 - reasonstring
 
 - cancellationOfstring (uuid)
The ID of the Invoice that this invoice cancels.
 - currencystringrequired
 - customerIdstringrequired
 - datestring (date-time)required
 - groupsarray of objectrequired
- Array[
 - *object
- contractIdstring (uuid)
 - descriptionstring
 - itemsarray of objectrequired
- Array[
 - *object
- additionalDescriptionstring
 - contractItemIdstring (uuid)required
 - descriptionstringrequired
 - itemCancelledOrCorrectedByarray of object
- Array[
 - *object
- sourceInvoiceIdstring (uuid)
 - sourceInvoiceItemIdstring (uuid)
 
 
] 
 - itemIdstring (uuid)required
 - priceobjectrequired
- currency"EUR"required
 - valueintegerrequired
 
 - referenceobject
- sourceInvoiceIdstring (uuid)required
 - sourceInvoiceItemIdstring (uuid)required
 
 - serviceDatestring (date-time)
 - servicePeriodobject
- endstring (date-time)required
 - startstring (date-time)required
 
 - vatRatenumberrequired
 
 
] 
 
 
]
idstring (uuid)
required
invoiceNumberstring
required
invoiceTypestring (one of: REGULAR, REISSUE, CORRECTION, CANCELLATION)
required
paymentSettingsone of 2 alternatives
- Alternativeobject
- accountHolderstringrequired
 - bicstring
Optional. Required for payments outside of the European Union.
 - ibanstringrequired
 - method"debit"required
 
 - Alternativeobject
- method"invoice"required
 
 
pdfIdstring (uuid)
required
recipientobject
required
- addressobjectrequired
- streetstringrequired
 - houseNumberstringrequired
 - citystringrequired
 - zipstringrequired
 - countryCodestringrequired
ISO 3166-1 alpha-2 country code
 - addressPrefixstring
 
 - companystring
 - emailAddressstring (email)
 - firstNamestring
 - lastNamestring
 - phoneNumbersarray of string
- Array[
 - *string
 
] 
salutationstring (one of: mr, ms, other)
required
titlestring
useFormalTermboolean
reissuedBystring (uuid)
The ID of the Invoice that is a Reissue of this one.
statusstring (one of: NEW, CONFIRMED, DENIED, PAID, PARTIALLY_PAID, OVERPAID)
required
totalGrossnumber
required
totalNetnumber
required
vatIdstring
]
Content-Type: application/json
[
  {
    "amountPaid": 500,
    "cancellation": {
      "cancellationId": "f0f86186-0a5a-45b2-aa33-502777496347",
      "cancelledAt": "2025-11-03T18:08:30.888Z",
      "correctionNumber": "RG1234567",
      "pdfId": "f0f86186-0a5a-45b2-aa33-502777496347",
      "reason": "Kulanz"
    },
    "cancellationOf": "f0f86186-0a5a-45b2-aa33-502777496347",
    "currency": "EUR",
    "customerId": "e0a3b0e0-0e0e-0e0e-0e0e-0e0e0e0e0e0e",
    "date": "2025-11-03T18:08:30.888Z",
    "groups": [
      {
        "contractId": "f0f86186-0a5a-45b2-aa33-502777496347",
        "description": "Space-Server: \"Mein Space-Server\"",
        "items": [
          {
            "additionalDescription": "Short-ID: \"s-123456\"",
            "contractItemId": "f0f86186-0a5a-45b2-aa33-502777496347",
            "description": "Space-Server: \"Mein Space-Server\"",
            "itemCancelledOrCorrectedBy": [
              {
                "sourceInvoiceId": "f0f86186-0a5a-45b2-aa33-502777496347",
                "sourceInvoiceItemId": "f0f86186-0a5a-45b2-aa33-502777496347"
              }
            ],
            "itemId": "f0f86186-0a5a-45b2-aa33-502777496347",
            "price": {
              "currency": "EUR",
              "value": 1000
            },
            "reference": {
              "sourceInvoiceId": "f0f86186-0a5a-45b2-aa33-502777496347",
              "sourceInvoiceItemId": "f0f86186-0a5a-45b2-aa33-502777496347"
            },
            "serviceDate": "2025-11-03T18:08:30.888Z",
            "servicePeriod": {
              "end": "2025-11-03T18:08:30.888Z",
              "start": "2025-11-03T18:08:30.888Z"
            },
            "vatRate": 19
          }
        ]
      }
    ],
    "id": "f0f86186-0a5a-45b2-aa33-502777496347",
    "invoiceNumber": "RG1234567",
    "invoiceType": "REGULAR",
    "paymentSettings": {
      "accountHolder": "Ada Lovelace",
      "bic": "DEUTDEDB123",
      "iban": "DE12345678901234567890",
      "method": "debit"
    },
    "pdfId": "f0f86186-0a5a-45b2-aa33-502777496347",
    "recipient": {
      "address": {
        "street": "Königsberger Straße",
        "houseNumber": "4-6",
        "city": "Espelkamp",
        "zip": "32339",
        "countryCode": "DE",
        "addressPrefix": "c/o Ada Lovelace"
      },
      "company": "Mittwald CM Service GmbH & Co. KG",
      "emailAddress": "email@mittwald.example",
      "firstName": "Ada",
      "lastName": "Lovelace",
      "phoneNumbers": [
        "+49 123 4567890"
      ],
      "salutation": "mr",
      "title": "Dr.",
      "useFormalTerm": true
    },
    "reissuedBy": "f0f86186-0a5a-45b2-aa33-502777496347",
    "status": "NEW",
    "totalGross": 595,
    "totalNet": 500,
    "vatId": "DE123456789"
  }
]
{
  "items": {
    "properties": {
      "amountPaid": {
        "example": 500,
        "type": "number"
      },
      "cancellation": {
        "properties": {
          "cancellationId": {
            "format": "uuid",
            "type": "string"
          },
          "cancelledAt": {
            "format": "date-time",
            "type": "string"
          },
          "correctionNumber": {
            "example": "RG1234567",
            "type": "string"
          },
          "pdfId": {
            "format": "uuid",
            "type": "string"
          },
          "reason": {
            "example": "Kulanz",
            "type": "string"
          }
        },
        "required": [
          "pdfId",
          "correctionNumber",
          "cancelledAt",
          "cancellationId"
        ],
        "type": "object"
      },
      "cancellationOf": {
        "description": "The ID of the Invoice that this invoice cancels.",
        "format": "uuid",
        "type": "string"
      },
      "currency": {
        "example": "EUR",
        "type": "string"
      },
      "customerId": {
        "example": "e0a3b0e0-0e0e-0e0e-0e0e-0e0e0e0e0e0e",
        "type": "string"
      },
      "date": {
        "format": "date-time",
        "type": "string"
      },
      "groups": {
        "items": {
          "properties": {
            "contractId": {
              "format": "uuid",
              "type": "string"
            },
            "description": {
              "example": "Space-Server: \"Mein Space-Server\"",
              "type": "string"
            },
            "items": {
              "items": {
                "properties": {
                  "additionalDescription": {
                    "example": "Short-ID: \"s-123456\"",
                    "type": "string"
                  },
                  "contractItemId": {
                    "format": "uuid",
                    "type": "string"
                  },
                  "description": {
                    "example": "Space-Server: \"Mein Space-Server\"",
                    "type": "string"
                  },
                  "itemCancelledOrCorrectedBy": {
                    "items": {
                      "properties": {
                        "sourceInvoiceId": {
                          "format": "uuid",
                          "type": "string"
                        },
                        "sourceInvoiceItemId": {
                          "format": "uuid",
                          "type": "string"
                        }
                      },
                      "type": "object"
                    },
                    "type": "array"
                  },
                  "itemId": {
                    "format": "uuid",
                    "type": "string"
                  },
                  "price": {
                    "properties": {
                      "currency": {
                        "enum": [
                          "EUR"
                        ],
                        "type": "string"
                      },
                      "value": {
                        "example": 1000,
                        "type": "integer"
                      }
                    },
                    "required": [
                      "value",
                      "currency"
                    ],
                    "type": "object"
                  },
                  "reference": {
                    "properties": {
                      "sourceInvoiceId": {
                        "format": "uuid",
                        "type": "string"
                      },
                      "sourceInvoiceItemId": {
                        "format": "uuid",
                        "type": "string"
                      }
                    },
                    "required": [
                      "sourceInvoiceId",
                      "sourceInvoiceItemId"
                    ],
                    "type": "object"
                  },
                  "serviceDate": {
                    "format": "date-time",
                    "type": "string"
                  },
                  "servicePeriod": {
                    "properties": {
                      "end": {
                        "format": "date-time",
                        "type": "string"
                      },
                      "start": {
                        "format": "date-time",
                        "type": "string"
                      }
                    },
                    "required": [
                      "start",
                      "end"
                    ],
                    "type": "object"
                  },
                  "vatRate": {
                    "example": 19,
                    "type": "number"
                  }
                },
                "required": [
                  "itemId",
                  "price",
                  "vatRate",
                  "contractItemId",
                  "description"
                ],
                "type": "object"
              },
              "type": "array"
            }
          },
          "required": [
            "items"
          ],
          "type": "object"
        },
        "type": "array"
      },
      "id": {
        "format": "uuid",
        "type": "string"
      },
      "invoiceNumber": {
        "example": "RG1234567",
        "type": "string"
      },
      "invoiceType": {
        "enum": [
          "REGULAR",
          "REISSUE",
          "CORRECTION",
          "CANCELLATION"
        ],
        "type": "string"
      },
      "paymentSettings": {
        "oneOf": [
          {
            "properties": {
              "accountHolder": {
                "example": "Ada Lovelace",
                "type": "string"
              },
              "bic": {
                "description": "Optional. Required for payments outside of the European Union.",
                "example": "DEUTDEDB123",
                "type": "string"
              },
              "iban": {
                "example": "DE12345678901234567890",
                "type": "string"
              },
              "method": {
                "enum": [
                  "debit"
                ],
                "type": "string"
              }
            },
            "required": [
              "method",
              "iban",
              "accountHolder"
            ],
            "type": "object"
          },
          {
            "properties": {
              "method": {
                "enum": [
                  "invoice"
                ],
                "type": "string"
              }
            },
            "required": [
              "method"
            ],
            "type": "object"
          }
        ]
      },
      "pdfId": {
        "format": "uuid",
        "type": "string"
      },
      "recipient": {
        "properties": {
          "address": {
            "type": "object",
            "properties": {
              "street": {
                "type": "string",
                "example": "Königsberger Straße"
              },
              "houseNumber": {
                "type": "string",
                "example": "4-6"
              },
              "city": {
                "type": "string",
                "example": "Espelkamp"
              },
              "zip": {
                "type": "string",
                "example": "32339"
              },
              "countryCode": {
                "type": "string",
                "example": "DE",
                "description": "ISO 3166-1 alpha-2 country code"
              },
              "addressPrefix": {
                "type": "string",
                "example": "c/o Ada Lovelace"
              }
            },
            "required": [
              "street",
              "houseNumber",
              "city",
              "zip",
              "countryCode"
            ]
          },
          "company": {
            "example": "Mittwald CM Service GmbH & Co. KG",
            "type": "string"
          },
          "emailAddress": {
            "format": "email",
            "type": "string"
          },
          "firstName": {
            "example": "Ada",
            "type": "string"
          },
          "lastName": {
            "example": "Lovelace",
            "type": "string"
          },
          "phoneNumbers": {
            "items": {
              "example": "+49 123 4567890",
              "type": "string"
            },
            "type": "array"
          },
          "salutation": {
            "type": "string",
            "enum": [
              "mr",
              "ms",
              "other"
            ]
          },
          "title": {
            "example": "Dr.",
            "type": "string"
          },
          "useFormalTerm": {
            "type": "boolean"
          }
        },
        "required": [
          "address",
          "salutation"
        ],
        "type": "object"
      },
      "reissuedBy": {
        "description": "The ID of the Invoice that is a Reissue of this one.",
        "format": "uuid",
        "type": "string"
      },
      "status": {
        "enum": [
          "NEW",
          "CONFIRMED",
          "DENIED",
          "PAID",
          "PARTIALLY_PAID",
          "OVERPAID"
        ],
        "type": "string"
      },
      "totalGross": {
        "example": 595,
        "type": "number"
      },
      "totalNet": {
        "example": 500,
        "type": "number"
      },
      "vatId": {
        "example": "DE123456789",
        "type": "string"
      }
    },
    "required": [
      "id",
      "customerId",
      "invoiceNumber",
      "date",
      "pdfId",
      "groups",
      "status",
      "amountPaid",
      "recipient",
      "totalNet",
      "totalGross",
      "currency",
      "invoiceType"
    ],
    "type": "object"
  },
  "type": "array"
}
Usage examples
- cURL
 - JavaScript SDK
 - PHP SDK
 
$ curl \
    --fail \
    --location \
    -H "Authorization: Bearer $MITTWALD_API_TOKEN" \
    https://api.mittwald.de/v2/customers/string/invoices?invoiceTypes=REGULAR&status=CONFIRMED&search=string&limit=50&page=1&sort=invoiceNumber&order=asc
import { MittwaldAPIV2Client } from "@mittwald/api-client";
import { assertStatus } from "@mittwald/api-client-commons";
  
const client = MittwaldAPIClient.newWithToken(process.env.MITTWALD_API_TOKEN);
const response = await client.contract.invoiceListCustomerInvoices({
  "customerId": "string",
  "queryParameters": {
    "invoiceTypes": [
      "REGULAR"
    ],
    "status": [
      "CONFIRMED"
    ],
    "search": "string",
    "limit": 50,
    "page": 1,
    "sort": [
      "invoiceNumber"
    ],
    "order": [
      "asc"
    ]
  }
});
assertStatus(response, 200);
  
use \Mittwald\ApiClient\Generated\V2\Clients\Contract\InvoiceListCustomerInvoices\InvoiceListCustomerInvoicesRequest;
  
$client = MittwaldAPIClient::newWithToken(getenv('MITTWALD_API_TOKEN'));
$request = (new InvoiceListCustomerInvoicesRequest(
  customerId: "string"
))
  ->withInvoiceTypes(["REGULAR"])
  ->withStatus(["CONFIRMED"])
  ->withSearch("string")
  ->withLimit(50)
  ->withPage(1)
  ->withSort(["invoiceNumber"])
  ->withOrder(["asc"]);
$response = $client->contract()->invoiceListCustomerInvoices($request);
var_dump($response->getBody();