XML : ebay BulkDataExchangeRequests API XML - UUID is missing

I'm testing a request to the LMS side of the eBay API by sending a AddFixedPriceItemRequest to BulkDataExchangeRequests via createUploadJob.

When I do this I get the error: "UUID is required" even though in the documentation that I can find it says UUID is optional. However, I am including a UUID in the body of the call.

For the life of me I can't find an example of what the entire API call should look like. Headers included.

I am coding this in Ruby using the gems HTTParty and Builder for the XML. My other calls are working fine and I verified this is the actual XML that is being sent.

Here is what my XML looks like with header info:

  destination = 'https://webservices.sandbox.ebay.com/BulkDataExchangeService'    headers = {   "X-EBAY-API-COMPATIBILITY-LEVEL"=>"949",   "X-EBAY-API-DEV-NAME"=>"My dev name token",   "X-EBAY-API-APP-NAME"=>"App name token",   "X-EBAY-API-CERT-NAME"=>"Cert name token",   "X-EBAY-SOA-OPERATION-NAME"=>"createUploadJob",   "X-EBAY-SOA-SECURITY-TOKEN" => "My auth token",   "X-EBAY-API-SITEID"=>"0",   "Content-Type"=>"text/xml"}     <?xml version="1.0" encoding="utf-8"?>   <BulkDataExchangeRequests>    <Header>     <SiteId>0</SiteId>     <Version>739</Version>    </Header>  <AddFixedPriceItemRequest xmlns="urn:ebay:apis:eBLBaseComponents">  <RequesterCredentials>    <eBayAuthToken>My Auth token</eBayAuthToken>  </RequesterCredentials>  <ErrorLanguage>en_US</ErrorLanguage>  <WarningLevel>High</WarningLevel>  <Item>    <Title>Listing with a bunch of CSS but no JS</Title>    <Description>      <![CDATA[bunch of html]]>    </Description>    <PrimaryCategory>      <CategoryID>37565</CategoryID>    </PrimaryCategory>    <ConditionID>3000</ConditionID>    <CategoryMappingAllowed>true</CategoryMappingAllowed>    <Country>US</Country>    <Currency>USD</Currency>    <DispatchTimeMax>3</DispatchTimeMax>    <ListingDuration>Days_7</ListingDuration>    <ListingType>FixedPriceItem</ListingType>    <PaymentMethods>PayPal</PaymentMethods>    <PayPalEmailAddress>todd@piedmontred.com</PayPalEmailAddress>    <PictureDetails>      <PictureURL>http://s18.postimg.org/ocjdgkfrt/4_pack.jpg</PictureURL>    </PictureDetails>    <PostalCode>28211</PostalCode>    <ItemSpecifics>      <NameValueList>        <Name>Brand</Name>        <Value>Nike</Value>      </NameValueList>      <NameValueList>        <Name>Model</Name>        <Value>Odyssey</Value>      </NameValueList>    </ItemSpecifics>    <Variations>      <VariationSpecificsSet>        <NameValueList>          <Name>Size</Name>          <Value>XS</Value>          <Value>Large</Value>        </NameValueList>        <NameValueList>          <Name>Color</Name>          <Value>Black</Value>          <Value>Pink</Value>        </NameValueList>      </VariationSpecificsSet>      <Variation>        <SKU>my_first_sku</SKU>        <StartPrice>35.99</StartPrice>        <Quantity>5</Quantity>        <VariationSpecifics>          <NameValueList>            <Name>Size</Name>            <Value>XS</Value>          </NameValueList>          <NameValueList>            <Name>Color</Name>            <Value>Black</Value>          </NameValueList>        </VariationSpecifics>      </Variation>      <Variation>        <SKU>my_second_sku</SKU>        <StartPrice>38.99</StartPrice>        <Quantity>6</Quantity>        <VariationSpecifics>          <NameValueList>            <Name>Size</Name>            <Value>Large</Value>          </NameValueList>          <NameValueList>            <Name>Color</Name>            <Value>Pink</Value>          </NameValueList>        </VariationSpecifics>      </Variation>      <Pictures>        <VariationSpecificName>Color</VariationSpecificName>        <VariationSpecificPictureSet>          <VariationSpecificValue>Black</VariationSpecificValue>          <PictureURL>http://thecodeplayer.com/uploads/s.jpg</PictureURL>          <PictureURL>http://thecodeplayer.com/uploads/1.jpg</PictureURL>        </VariationSpecificPictureSet>        <VariationSpecificPictureSet>          <VariationSpecificValue>Pink</VariationSpecificValue>          <PictureURL>http://thecodeplayer.com/uploads/mediaB.jpg</PictureURL>          <PictureURL>http://thecodeplayer.com/uploads/mediadx.jpg</PictureURL>        </VariationSpecificPictureSet>      </Pictures>    </Variations>    <ReturnPolicy>      <ReturnsAcceptedOption>ReturnsAccepted</ReturnsAcceptedOption>      <RefundOption>MoneyBack</RefundOption>      <ReturnsWithinOption>Days_30</ReturnsWithinOption>      <Description>This is just a description for the return        policy</Description>      <ShippingCostPaidByOption>Buyer</ShippingCostPaidByOption>    </ReturnPolicy>    <ShippingDetails>      <ShippingType>Flat</ShippingType>      <ShippingServiceOptions>        <ShippingServicePriority>1</ShippingServicePriority>        <ShippingService>USPSMedia</ShippingService>        <ShippingServiceCost>2.50</ShippingServiceCost>      </ShippingServiceOptions>    </ShippingDetails>    <Site>US</Site>    <UUID>8deb51e81bdc4b8eb136f92b746dd898</UUID>  </Item>