---
title: "What is the use of the mustUnderstand attribute in the Header element of a SOAP message?"  
description: "What is the use of the mustUnderstand attribute in the Header element of a SOAP message?"  
author: "Sumit Kesarwani"  
published: 2014-08-26  
updated: 2020-09-15  
canonical: https://www.mindstick.com/interview/2037/what-is-the-use-of-the-mustunderstand-attribute-in-the-header-element-of-a-soap-message  
category: "wcf"  
tags: ["wcf"]  
reading_time: 1 minute  

---

# What is the use of the mustUnderstand attribute in the Header element of a SOAP message?

The mustUnderstand attribute indicates that a header entry is either required or optional for the recipient to process further.

## Answers

### Answer by Sumit Kesarwani

The mustUnderstand attribute indicates that a header entry is either required or optional for the recipient to process further.


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Original Source: https://www.mindstick.com/interview/2037/what-is-the-use-of-the-mustunderstand-attribute-in-the-header-element-of-a-soap-message

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