# WhatsApp contact preferred language Once enabled for an external network, the contact preferred language can be set and updated for users through the customer endpoint dedicated to contact management. The list of supported preferred languages is based on Meta's Supported Languages list, available at . In this list, each valid language name is associated with a language code. The convention we use for setting the contact preferred language is full language names from the list, for example, French, German, Japanese, etc. Language name options including a code between parentheses are written with an underscore instead of parentheses, for example, English\_UK, Chinese\_CHN, Chinese\_TAI. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://rest-api-federation.symphony.com/26.06/readme/contact/whatsapp-contact-preferred-language.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.