Why isn't My Address Valid?

 There are a number of reasons why an address may show as invalid, even when using the most advanced tools available. Most address validation is a three-step process: parsing, standardization, and matching to an authoritative database (usually the US Postal Service). Addresses are broken down into their individual components so that errors in formatting, spelling, abbreviations, or other common mistakes can be corrected. During this step, CASS-certified providers can correct misspelled street names, fill in missing information, and ensure that the format of the house number, street type, city name, and zip code are consistent with the rules set by the governing postal authority.



Unfortunately, human error is still a big problem when it comes to addresses. People mash their keys when typing an address into a form, or the building they live in may be new and hasn't yet been registered with the Post Office. In these cases, the address will be marked as invalid, because it doesn't match any records in the database.

Other times, an address will be marked as invalid because it simply doesn't exist. This can be frustrating for homeowners who are expecting to receive deliveries, or businesses that are trying to ship products to a customer. It is a simple fact that the Post Office doesn't keep track of every new house or business that pops up in the middle of town. Fortunately, most residential property ownership is recorded publicly, and it is possible to verify an address by checking public records.

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