# Internal value change in an API (postal code property)

**URL:** <https://community.hubspot.com/t/internal-value-change-in-an-api-postal-code-property/11275>\
**Category:** APIs & Integrations\
**Tags:** contacts\
**Created:** [September 24, 2018, 6:57am UTC](https://community.hubspot.com/t/internal-value-change-in-an-api-postal-code-property/11275 "2018-09-24T06:57:30Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![MathildeL](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/mathildel/32/35608_2.png) [@MathildeL](https://community.hubspot.com/u/MathildeL)\
**Post date:** [September 24, 2018, 6:57am UTC](https://community.hubspot.com/t/internal-value-change-in-an-api-postal-code-property/11275/1 "2018-09-24T06:57:30Z")

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Hi,

One of our customers (HUB 2842336) has a significant problem with this API: [https://developers.hubspot.com/docs/methods/contacts/get\_contact](https://developers.hubspot.com/docs/methods/contacts/get_contact).

He has always successfully retrieved the Postal Code field ([https://app.hubspot.com/property-settings/2842336/contact/code\_postal](https://app.hubspot.com/property-settings/2842336/contact/code_postal)) with the internal value code\_postal.

However, since last week, the developer who set up this API tells us that he has a problem importing data into his internal software because the value “code\_postal” would have been renamed to “zip”. However, I see in the properties of our client’s Hubspot account that this “zip” value is assigned to another postal code field ([Property Settings](https://app.hubspot.com/property-settings/2842336/contact/zip)).

Could you enlighten us on what is happening? For our part, we have not made any changes to the forms for a month and the postal code field with the zip value only appears on 3 forms (which is not new).

Did you make an update on your side that could explain that the API now returns the value “zip” and no longer “code\_postal”?

Thank you for your reply.

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<div class="post-metadata">

**Author:** ![IsaacTakushi](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/isaactakushi/32/70387_2.png) [@IsaacTakushi](https://community.hubspot.com/u/IsaacTakushi)\
**Post date:** [September 26, 2018, 7:01pm UTC](https://community.hubspot.com/t/internal-value-change-in-an-api-postal-code-property/11275/2 "2018-09-26T19:01:55Z")

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Hi [@Mathilde](https://community.hubspot.com/u/mathilde),

I’m happy to help, however there haven’t been any updates on our side.

The [Postal code](https://app.hubspot.com/property-settings/2842336/contact/zip) contact property with the internal name `zip` is the _default_ HubSpot contact property while [Code Postal](https://app.hubspot.com/property-settings/2842336/contact/code_postal) (`code_postal`) is a _custom_ contact property.

Besides being entirely different properties, `zip` has the field type “single-line text” while the custom property `code_postal` is a “number.” This could be causing issues, as the fields cannot be mapped to each other.