# UpdateWhatsAppParameters
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The updated delivery parameters for the WhatsApp channel. Absent members preserve the current value, and the empty sentinel on a member clears it.

## Contents
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 ** languageCode **   <a name="endusermessaging-Type-UpdateWhatsAppParameters-languageCode"></a>
The updated BCP 47 language code. An empty string clears the previously stored value.  
Type: String  
Length Constraints: Minimum length of 0. Maximum length of 35.  
Pattern: `(\S{2,35})?`   
Required: No

 ** whatsAppTemplateName **   <a name="endusermessaging-Type-UpdateWhatsAppParameters-whatsAppTemplateName"></a>
The updated name of the Meta-approved WhatsApp authentication template. An empty string clears the previously stored value.  
Type: String  
Length Constraints: Minimum length of 0. Maximum length of 512.  
Pattern: `\S*`   
Required: No

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\+\+](https://docs.aws.amazon.com/goto/SdkForCpp/endusermessaging-2026-09-21/UpdateWhatsAppParameters) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/endusermessaging-2026-09-21/UpdateWhatsAppParameters) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/endusermessaging-2026-09-21/UpdateWhatsAppParameters)