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# Contact update fields

> Use this reference to view all the fields associated with the contact data dictionary.

Use this reference to view all the fields associated with the contact data dictionary.

> **Note**
>
> Fields with an asterisk mark indicate mandatory fields.

| Name               | Description                                                                                | Value                     |
| ------------------ | ------------------------------------------------------------------------------------------ | ------------------------- |
| Id\*               | The ID of the contact that you want to update.                                             | string                    |
| Address1           | The first line of the contact's address, which is often a street address or business name. | string \<= 255 characters |
| Address2           | The second line of the contact's address.                                                  | string \<= 255 characters |
| City               | The city of the contact's address.                                                         | string \<= 40 characters  |
| ContactDescription | A description for the contact.                                                             | string \<= 100 characters |
| Country            | The country of the contact's address.                                                      | string \<= 64 characters  |
| County             | The county. May optionally be used by Zuora Tax to calculate county tax.                   | string \<= 32 characters  |
| Fax                | The contact's fax number.                                                                  | string \<= 40 characters  |
| FirstName          | The contact's first name.                                                                  | string \<= 100 characters |
| HomePhone          | The contact's home phone number.                                                           | string \<= 40 characters  |
| LastName           | The contact's last name.                                                                   | string \<= 100 characters |
| MobilePhone        | The mobile phone number of the contact.                                                    | string \<= 100 characters |
| NickName           | A nickname for the contact.                                                                | string \<= 100 characters |
| OtherPhone         | An additional phone number for the contact.                                                | string \<= 40 characters  |
| OtherPhoneType     | The type of the additional phone number. Enum: "Work" "Mobile" "Home" "Other"              | string                    |
| PersonalEmail      | The contact's personal email address.                                                      | string \<= 74 characters  |
| PostalCode         | The state or province of the contact's address.                                            | string \<= 40 characters  |
| State              | The state or province of the contact's address.                                            | string \<= 40 characters  |
| TaxRegion          | If using Zuora Tax, a region string as optionally defined in your tax rules. Not required. | string \<= 32 characters  |
| WorkEmail          | The contact's business email address.                                                      | string \<= 74 characters  |
| WorkPhone          | The contact's business phone number.                                                       | string \<= 40 characters  |