Getting exception while creating customer using api

[hadiurrehman01]

Hi everyone, I am creating a customer using rest API(/admin/api/2022-04/customers.json) with the following payload.

{
    "customer": {
        "first_name": "john",
        "last_name": "doe",
        "email": "johndoe@example.com",
        "phone": null,
        "verified_email": true,
        "addresses": [{
            "address1": "",
            "address2": "",
            "city": "",
            "province": "City of London",
            "phone": "19876543210",
            "zip": "",
            "first_name": "john",
            "last_name": "doe",
            "country": "United Kingdom",
            "company": ""
        }],
        "password": "Suraut^23",
        "password_confirmation": "Suraut^23"
    }
}

and getting this exception from API

Error: StatusCodeError: 422 - {"errors":{"addresses.province":["is not valid"]}}