Line 1 Address error upon upgrading to 9.7

Hi @domagron,

Great job running additional conflict tests and sharing your findings with us. Since you’ve already opened a support ticket on WooCommerce.com and are receiving assistance there, it’s best to continue the conversation through that channel to avoid any confusion.

However, if you’re eventually redirected back to the forum, feel free to return here, provide a summary of the troubleshooting steps you’ve taken, and we’ll take it from there. For now, I’ll go ahead and mark this thread as resolved.

This problem still exists, but I’ve found the solution.

In version 9.7, the validate_create_customer_request method was added in includes/class-wc-stripe-customer.php on line 219.

This function retrieves the required fields from the get_create_customer_required_fields method, which gets its data from:
WC_Checkout::instance()->get_checkout_fields( ‘billing’ );

By default, every billing field is required, except for the company and billing_address_2 fields. That includes the phone number field.

So, if the customer leaves out any field (except company and address 2), the checkout will fail. The data won’t even be sent to the Stripe API.

Another issue is that not every WooCommerce order requires a billing address. For example, I run a digital product store and don’t need to collect address information.

In the get_create_customer_required_fields method, there’s a condition that checks if the user is on the “Add Payment Method” page:

// If we are on the add payment method page, we need to check just for the email field.
		if ( $is_add_payment_method_page ) {
			return [
				'email' => true,
			];
		}

This logic also needs to be applied when an admin manually creates an order and sends it to the customer. Manually created orders do not display billing fields during checkout.

There are two ways to fix this:
Use the wc_stripe_create_customer_required_fields filter to override the required fields.

Use the woocommerce_billing_fields filter to customize which fields are required.

https://developer.woocommerce.com/docs/code-snippets/customising-checkout-fields/