Drupal Commerce: How to add custom fields to collect extra information in a Drupal Commerce checkout process?

Drupal Commerce is used to build eCommerce websites and applications of all sizes. Drupal Commerce is probably one of the most popular eCommerce module available for the Drupal CMS these days. In this post, we will see how to add custom fields in a Drupal Commerce checkout process. The benefit is that it will allow us to collect extra information from customers pertaining to an order.

How to add custom fields to collect extra information in a Drupal Commerce checkout process? Let's discuss this step by step. This example is based on Drupal 7.

Prerequisites:

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