For U.S. addresses only, Residential Delivery Indicator (RDI™) processing can help you determine the best cost for shipping your packages. RDI™ processing identifies whether an address is a business or a residential address. This difference is important because some delivery services charge a higher price for delivery to a residential address than they do to a business address.
When you validate an address, the address is assigned an RDI code in the RDI field. The RDI codes are:
- B
- The address is a business address.
- R
- The address is a residential address.
- M
- The address is both a residential and a business address.
- null
- Not checked because the address did not code at a ZIP + 4® level, or RDI™ was not performed.