====== Suggest Postal Code (Expression Function) ======

===== Purpose =====
The **Suggest Postal Code** function (SUGGEST_POSTAL_CODE) takes in a street address, city, and state and returns the postal code that best matches.  If one can not be found it will return an empty string.

{{:suggest_zip_code_initial.png?direct&600|}}

===== Parameters =====
The **Suggest Postal Code** function has three parameters, all of which are required:

==== Street ====

Allowed Inputs: Street part of a [[Field|field]] value or a string

The first required parameter is the street part of the address used to find the postal code.

==== City ====

Allowed Inputs: City part of a [[Field|field]] value or a string

The second required parameter is the city of the postal code to find
==== State ====

Allowed Inputs: State part of a [[Field|field]] value or a string

The third required parameter is the state of the postal code to find


===== Output =====

The output of the **Suggest Postal Code** function is string representing the postal code of the give street address, city, state.

===== Example =====

For example SUGGEST_POSTAL_CODE('304 Market St','Harrisburg','PA') will result in "17101" and SUGGEST_POSTAL_CODE('196 Hallam St','Toronto','ON') will result in "M6C1C6"