const options = {
  method: 'PATCH',
  headers: {
    'x-api-key': '<api-key>',
    'x-api-secret': '<api-key>',
    'x-connector-id': '<api-key>',
    'x-owner-id': '<api-key>',
    'x-session-token': '<api-key>',
    'Content-Type': 'application/json'
  },
  body: '{"invoiceCode":"<string>","customerContact":{"id":"<string>","object":"resourceRef","model":"<string>","fields":"<any>","rawResource":"<any>","remote":{"id":"<string>"},"createdAt":"<string>","updatedAt":"<string>"},"customerCompany":{"id":"<string>","object":"resourceRef","model":"<string>","fields":"<any>","rawResource":"<any>","remote":{"id":"<string>"},"createdAt":"<string>","updatedAt":"<string>"},"issuedAt":"<string>","dueAt":"<string>","paidAt":"<string>","status":"draft","lineItems":[{"id":"<string>","object":"resourceRef","model":"<string>","fields":"<any>","rawResource":"<any>","remote":{"id":"<string>"},"createdAt":"<string>","updatedAt":"<string>"}],"currency":"<string>","preTaxAmount":1,"taxAmount":1,"totalAmount":1,"inclusiveOfTax":true,"balance":1,"note":"<string>"}'
};

fetch('https://api.runmorph.dev/v1/resources/accountingInvoice/{resourceId}', options)
  .then(response => response.json())
  .then(response => console.log(response))
  .catch(err => console.error(err));

{
  "object": "resourceRef",
  "model": "<string>",
  "id": "<string>",
  "remote": {
    "id": "<string>"
  }
}