There are certain elements on ebay that have a UPC in their description. for example, CDs and other media have a field in the actual description of an item called UPC, and books have ISBN directly in the description. is it possible to programmatically capture this information? most preferably, the solution would be in .NET.
This data should be available in the listing attributes that ItemType.AttributeArray
ItemType.AttributeArray
based on what is indicated in their API link, you can probably use the http://developer.ebay.com/devzone/xml/docs/reference/ebay/GetProducts.html GetProducts call.
In particular, the Trading API in the area that refers to a conditional query named: ProductSearch.ExternalProductID
"A query that retrieves only those items that are listed on stock products that have ISBN or UPC values (such as books, DVDs, CDs, and video game products). Use this query to retrieve basic information about a single product catalog (or a very limited number of products.) The results may optionally include items, reviews and / or purchase guides relevant to that product. (In particular, returned items are products specified by sellers with the indicated info. mation about product supplies.) "
for xml samples of this call see http://developer.ebay.com/DevZone/XML/docs/WebHelp/wwhelp/wwhimpl/js/html/wwhelp.htm?context=eBay_XML_API&topic=GetProductsSamples
regarding the .net accelerator, ebay offers one at http://developer.ebay.com/developercenter/windows/sdk/ for download and testing.
one more thing, I usually test xml calls with the ALTOVA (xml) package. I suggest you do the same. brgds.