| address_city? | string | City of the billing address. | 
| address_country? | SCCountryType | Country of the billing address. | 
| address_line1? | string | First line of the billing address. | 
| address_line2? | string | Second line of the billing address (optional). | 
| address_postal_code? | string | Postal code of the billing address. | 
| address_state? | string | State or province of the billing address. | 
| isBusiness? | boolean | Indicates whether the billing information is for a business entity. | 
| name? | string | Full name of the customer for billing purposes. | 
| pec? | string | Certified email (PEC) address for electronic invoicing in Italy. | 
| phone? | string | Customer's phone number. | 
| sdi? | string | SDI (Sistema di Interscambio) code for electronic invoicing in Italy. | 
| tax_code? | string | Customer's tax code or personal tax identification number. | 
| tax_id_data? | object | Additional tax ID data, used for business identification. | 
| tax_id_data.value | string | - | 
| taxIdValidationStatus? | string | Status of the tax ID validation process. |