Adding fixed price item using eBay SOAP-request returning error 37

Question

I'm trying to submit a new product using the eBay API, but whatever I try the following error occurs:

Input data for tag is invalid or missing. Please check API documentation. (error code 37).

It doesn't show which field in the "ShippingDetails" is invalid. I've tried everything without success.

<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="urn:ebay:apis:eBLBaseComponents">
    <SOAP-ENV:Header>
        <ns1:RequesterCredentials>
            <ns1:eBayAuthToken>(hidden)</ns1:eBayAuthToken>
            <ns1:Credentials>
                <ns1:AppId>(hidden)</ns1:AppId>
                <ns1:DevId>(hidden)</ns1:DevId>
                <ns1:AuthCert>(hidden)</ns1:AuthCert>
            </ns1:Credentials>
        </ns1:RequesterCredentials>
    </SOAP-ENV:Header>
    <SOAP-ENV:Body>
        <ns1:AddFixedPriceItemRequest>
            <ns1:ErrorLanguage>en_US</ns1:ErrorLanguage>
            <ns1:Version>837</ns1:Version>
            <ns1:Item>
                <ns1:Country>NL</ns1:Country>
                <ns1:Currency>EUR</ns1:Currency>
                <ns1:Description>&lt;div style="font-family: Arial, sans-serif; font-size: 13px; line-height: 20px;"&gt;&lt;/div&gt;</ns1:Description>
                <ns1:ListingDuration>GTC</ns1:ListingDuration>
                <ns1:Location>Oirsbeek</ns1:Location>
                <ns1:PaymentMethods>PayPal</ns1:PaymentMethods>
                <ns1:PayPalEmailAddress>info@sfeerleven.nl</ns1:PayPalEmailAddress>
                <ns1:PrimaryCategory>
                    <ns1:CategoryID>11700</ns1:CategoryID>
                </ns1:PrimaryCategory>
                <ns1:Quantity>20</ns1:Quantity>
                <ns1:ShippingDetails>
                    <ns1:ShippingServiceOptions>
                        <ns1:ShippingService>DE_GLSInternational</ns1:ShippingService>
                        <ns1:ShippingServiceCost>5.95</ns1:ShippingServiceCost>
                        <ns1:ShippingServicePriority>1</ns1:ShippingServicePriority>
                        <ns1:FreeShipping>false</ns1:FreeShipping>
                    </ns1:ShippingServiceOptions>
                    <ns1:ShippingType>Flat</ns1:ShippingType>
                </ns1:ShippingDetails>
                <ns1:StartPrice>85.95</ns1:StartPrice>
                <ns1:Title>Clayre &amp;amp; Eef Bett&amp;uuml;berwurf 180x260 | Q103.060</ns1:Title>
                <ns1:VATDetails>
                    <ns1:VATPercent>21</ns1:VATPercent>
                </ns1:VATDetails>
                <ns1:SKU>Q103.060</ns1:SKU>
                <ns1:CategoryBasedAttributesPrefill>true</ns1:CategoryBasedAttributesPrefill>
                <ns1:PostalCode>6438 BB</ns1:PostalCode>
                <ns1:PictureDetails>
                    <ns1:PictureURL>https://sfeerleven.nl/perry/Afbeeldingen/originals/Q103.060.jpg</ns1:PictureURL>
                </ns1:PictureDetails>
                <ns1:DispatchTimeMax>0</ns1:DispatchTimeMax>
                <ns1:ReturnPolicy>
                    <ns1:ReturnsAcceptedOption>ReturnsAccepted</ns1:ReturnsAcceptedOption>
                </ns1:ReturnPolicy>
                <ns1:ConditionID>1000</ns1:ConditionID>
            </ns1:Item>
        </ns1:AddFixedPriceItemRequest>
    </SOAP-ENV:Body>
</SOAP-ENV:Envelope>

Answer 1

The value DE_GLSInternational is not a valid shipping service. The services available on eBay do change over time and so the best way to get the latest is as follows.

• Make a call to GeteBayDetails for the site that you are listing to.
• In the request ensure that DetailName is set to ShippingServiceDetails.
• In the response iterate through each ShippingServiceDetails element and check for the existence of ValidForSellingFlow.
• If ValidForSellingFlow exists and has the value 'true', read in the value of ShippingService.
• You can also check the value of InternationalService to see if the service is available for international shipping.

Do not use any of the values that are available in the official eBay documentation. This page is very out of date and many of the services listed no longer exist.