curl --request POST \
  --url https://api.interchange.io/api/v2/storefront/account-mappings/relationships/{relationshipId}/ready-to-invoice \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "billingEntity": {
    "legal_name": "<string>",
    "vat_id": "<string>",
    "tax_id": "<string>",
    "registration_number": "<string>",
    "contacts": [
      {
        "name": "<string>",
        "email": "jsmith@example.com",
        "phone": "<string>"
      }
    ],
    "ext": {}
  }
}
'

import requests

url = "https://api.interchange.io/api/v2/storefront/account-mappings/relationships/{relationshipId}/ready-to-invoice"

payload = { "billingEntity": {
        "legal_name": "<string>",
        "vat_id": "<string>",
        "tax_id": "<string>",
        "registration_number": "<string>",
        "contacts": [
            {
                "name": "<string>",
                "email": "jsmith@example.com",
                "phone": "<string>"
            }
        ],
        "ext": {}
    } }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    billingEntity: {
      legal_name: '<string>',
      vat_id: '<string>',
      tax_id: '<string>',
      registration_number: '<string>',
      contacts: [{name: '<string>', email: 'jsmith@example.com', phone: '<string>'}],
      ext: {}
    }
  })
};

fetch('https://api.interchange.io/api/v2/storefront/account-mappings/relationships/{relationshipId}/ready-to-invoice', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "id": "<string>",
  "relationshipId": "<string>",
  "invoiceParty": "operator",
  "billingEntity": {},
  "authority": "crm",
  "evidence": {
    "reference": "<string>",
    "note": "<string>"
  },
  "state": "active",
  "validFrom": "<string>",
  "validUntil": "<string>",
  "supersedesId": "<string>",
  "createdAt": "<string>",
  "createdBy": "<string>"
}

{
  "data": null,
  "error": {
    "code": "<string>",
    "message": "<string>",
    "field": "<string>",
    "details": {}
  }
}

{
  "data": null,
  "error": {
    "code": "<string>",
    "message": "<string>",
    "field": "<string>",
    "details": {}
  }
}

{
  "data": null,
  "error": {
    "code": "<string>",
    "message": "<string>",
    "field": "<string>",
    "details": {}
  }
}

{
  "data": null,
  "error": {
    "code": "<string>",
    "message": "<string>",
    "field": "<string>",
    "details": {}
  }
}