Less than (<) and greater than (>) symbols must be escaped
When you create a function template that uses a less than (<) or greater than (>) symbol, you must use CDATA to escape the symbol. For example, the default mapping for the not-equal-to operator is the following:
<FunctionMapping FunctionName="NE">
  <![CDATA[ $P0 <> $P1 ]]>
</FunctionMapping>
Alternatively, you can use &lt; and &gt; to represent the less than and greater than symbols.
If you use a less than or greater than symbol without escaping it, the Integration service returns an error because it cannot parse the mappings.xml file correctly.

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