Here my XML code
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Header>
<ns1:RequestHeader>
<ns1:clientCustomerId>XXX-XXX-XXXX</ns1:clientCustomerId>
<ns1:developerToken>{confidential}</ns1:developerToken>
<ns1:userAgent>INSERT_COMPANY_NAME_HERE (AwApi-PHP/5.5.2, Common-PHP/5.5.2, PHP/5.5.12)</ns1:userAgent>
</ns1:RequestHeader>
</SOAP-ENV:Header>
<SOAP-ENV:Body>
<ns1:mutate>
<ns1:operations>
<ns1:operator>ADD</ns1:operator>
<ns1:operand>
<ns1:name>camp 1</ns1:name>
<ns1:budget>
<ns1:budgetId>293235197</ns1:budgetId>
<ns1:name>camp 1_budget2014-11-29_54799b81674bf</ns1:name>
<ns1:period>DAILY</ns1:period>
<ns1:amount>
<ns1:ComparableValue.Type>Money</ns1:ComparableValue.Type>
<ns1:microAmount>1000000</ns1:microAmount>
</ns1:amount>
<ns1:deliveryMethod>STANDARD</ns1:deliveryMethod>
<ns1:isExplicitlyShared>false</ns1:isExplicitlyShared>
<ns1:status>ENABLED</ns1:status>
</ns1:budget>
<ns1:adServingOptimizationStatus>OPTIMIZE</ns1:adServingOptimizationStatus>
<ns1:advertisingChannelType>SEARCH</ns1:advertisingChannelType>
<ns1:networkSetting>
<ns1:targetGoogleSearch>true</ns1:targetGoogleSearch>
<ns1:targetSearchNetwork>true</ns1:targetSearchNetwork>
<ns1:targetContentNetwork>true</ns1:targetContentNetwork>
</ns1:networkSetting>
<ns1:biddingStrategyConfiguration>
<ns1:biddingStrategyType>BUDGET_OPTIMIZER</ns1:biddingStrategyType>
<ns1:biddingScheme xsi:type="ns1:BudgetOptimizerBiddingScheme">
<ns1:bidCeiling>
<ns1:microAmount>0</ns1:microAmount>
</ns1:bidCeiling>
</ns1:biddingScheme>
</ns1:biddingStrategyConfiguration>
</ns1:operand>
</ns1:operations>
</ns1:mutate>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>