---
title: "Determining the Address Validation Method"
slug: "determining-the-address-validation-method"
updated: 2026-10-24T14:00:32Z
published: 2026-10-24T14:00:32Z
canonical: "help.idibilling.com/determining-the-address-validation-method"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.idibilling.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Determining the Address Validation Method

When you enter an address for a new customer or change an address for an existing contact, the IDI platform determines which address validation method should be used. The result of this determination is the address's Required Validation Type.

The Required Validation Type is the validation method the system determines should be used for the contact. If the required validation method is unavailable, another method is used. The validation method actually used to assign the tax jurisdiction is displayed as the Actual Validation Type on the Address Validation Information window of the customer record.

- The system verifies the contact is one requiring validation. Address validation for taxing is performed only on the following contact types:
  - Primary Customer Contact
  - Location Contact (for POS)
  - Service Contact (not Service Address)
  - Shipping Contact
- If your company has a license for Enhanced Address Validation, the Required Validation Type is Enhanced Address Validation. (See [How Enhanced Address Validation Works](/v1/docs/how-enhanced-address-validation-works))

If not, the Required Validation Type is USPS. (See [How USPS Address Validation Works](/v1/docs/how-usps-address-validation-works))

See also:

[Address Validation Information](/v1/docs/address-validation-information)