<rewrite>
            <rewriteMaps>
                <rewriteMap name="Configs" />
            </rewriteMaps>
            <rules>
                <rule name="Правило переопределения1 для Configs">
                    <match url="(.*)" />
                    <conditions>
                        <add input="{URL}" pattern="test.contoso.com/(.*)GetTasksByproject(.*)" />
                    </conditions>
                    <action type="Rewrite" url="test.contoso.com/{C:1}GetAnotherTasksByproject{C:2}" appendQueryString="false" />
                </rule>
            </rules>
        </rewrite>