region Id error on updating address using address Id in magneto2

Question

I followed below link to update address using address id

Update customer address using address id in magento 2

I am getting this error upon executing this code

protected $addressRepository;

public function __construct(
\Magento\Customer\Api\AddressRepositoryInterface $addressRepository
 ) {
$this->addressRepository = $addressRepository;
}

public function changeAddress($addressId)
{
  $AddressId = 381993;

if(isset($AddressId) && $AddressId !=''){
            try{
                $address = $this->addressRepository->getById($AddressId);
                $address->setFirstname('test');
                $address->setLastname('test');
                $address->setCountryId('GB');
                $address->setRegion()->setData(array('region' => 'test'));
                $address->setPostcode('t9 1rd');
                $address->setCity('test');
                $this->addressRepository->save($address);
             }catch(\Exception $e){
               print_r($e->getMessage());
             }

            }
   }

I am getting this error upon using this code

  "message": "Invalid value of \"1\" provided for the regionId field.",

I tried

   $address->setRegion(); also same error again

What is the mistake in above code? Please anyone help me.

Answer 1

$countryId = 'US' //static set for example
$regionName = 'Alaska' //static set for example

/** @var \Magento\Directory\Model\Region $region */
$region = $this->regionFactory->create();
$region->loadByName($regionName, $countryId);
// load region on the 
// basis of state name and country id
$regionId = $region->getRegionId(); // obtain region_id

$address = $this->addressRepository->getById($AddressId);
$address->setFirstname('test');
$address->setLastname('test');
$address->setCountryId('US');
if (isset($regionId)) {
     $address->setRegionId($regionId);
}
$address->setPostcode('t9 1rd');
$address->setCity('Test City');
$this->addressRepository->save($address);

By default "region" is required if the selected "country" have dat for states or cities, else "region" is not needed. (You have set an empty region $address->setRegion())

Also, "region_id" is the primary key for the region should be the same as in database.

Try to run the above sample and check.