How to identify if region_id is required or region (region_name) is required?

Question

I am creating customer address in Magento 2 programatically.

In few countries the region_id is required, which can be obtained from the model \Magento\Directory\Model\Region, for example forUS country and in few countries the region is required which is a text field, for example for Italy country.

How to identify if region_id is required or region (region_name) is required for the country?

Answer 1

I have a suggestion for you. Take a look at \Magento\Directory\Helper\Data

public function getRegionData()
{
    .....
    return $regions;
}

This function will return the list of countries which have the regions are required.

You should build your own logic.