Using Ebay API - Large Merchant Service with PHP

Question

I'm doing some tests in Ebay Sandbox to understand how Large Merchant Service works, so lookong at some examples here i came up with some classes and an xml file setup for US site.

It works fine if I use this xml file, items are listed on ebay, but when i try to set the xml output for the italian site I mess something.

So, this is the xml file:

<?xml version="1.0" encoding="UTF-8"?>
<BulkDataExchangeRequests>
    <Header>
        <SiteID>101</SiteID>
        <Version>577</Version>
    </Header>
    <AddFixedPriceItemRequest xmlns="urn:ebay:apis:eBLBaseComponents">
        <ErrorLanguage>it_IT</ErrorLanguage>
        <WarningLevel>High</WarningLevel>
        <Version>577</Version>
    <MessageID>Request 1</MessageID>
        <Item>
            <SKU>49203489082034</SKU>
            <Country>IT</Country>
            <Currency>EUR</Currency>
            <Description>Item description</Description>
            <DispatchTimeMax>3</DispatchTimeMax>
            <InventoryTrackingMethod>SKU</InventoryTrackingMethod>
            <ListingDuration>Days_7</ListingDuration>
            <ListingType>FixedPriceItem</ListingType>
            <PostalCode>25121</PostalCode>
            <PaymentMethods>PayPal</PaymentMethods>
            <PayPalEmailAddress>[email protected]</PayPalEmailAddress>
            <PrimaryCategory>
                <CategoryID>118326</CategoryID>
            </PrimaryCategory>
            <Quantity>10</Quantity>
            <StartPrice>5.0</StartPrice>
            <ShippingDetails>
                <ShippingType>Flat</ShippingType>
                <ShippingServiceOptions>
                    <ShippingServicePriority>1</ShippingServicePriority>
                    <ShippingService>SDA</ShippingService>
                    <ShippingServiceCost>2.50</ShippingServiceCost>
          <ShippingServiceAdditionalCost>1.50</ShippingServiceAdditionalCost>
                </ShippingServiceOptions>
            </ShippingDetails>
            <Title>Test Item</Title>
            <ReturnPolicy>
                <ReturnsAcceptedOption>ReturnsAccepted</ReturnsAcceptedOption>
                <RefundOption>MoneyBack</RefundOption>
                <ReturnsWithinOption>Days_30</ReturnsWithinOption>
                <Description>Return policy details</Description>
                <ShippingCostPaidByOption>Buyer</ShippingCostPaidByOption>
            </ReturnPolicy>
        </Item>
    </AddFixedPriceItemRequest>
</BulkDataExchangeRequests>

Seems that the values for site id and version are correct, refering to the ebay docs. The category id is taken from sanbox.ebay.it.

Am I doing the api call in the right way? Have i forgot to declare some values? Or some values are not valid?

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I answer myself the question: i was messing the category_id and the ShippingService (IT_ExpressCourrier), besides for the italian version (101) you need to specify ShippingTimeMax.