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Reference.org
Application Level Events
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<p>Application Level Events (ALE) is a standard created by <a href="/facts/EPCglobal/7K7paNR5">EPCglobal</a>, an organization of industry leaders devoted to the development of standards for the <a href="/facts/Electronic_Product_Code/7nrjMF1A">Electronic Product Code</a> (EPC) and <a href="/facts/Radio-frequency_identification/4CnmIV2b">Radio-frequency identification</a> (RFID) technologies and standards. The ALE specification is a software specification indicating required functionality and behavior, as well as a common API expressed through XML Schema Definition (XSD) and Web Services Description Language (WSDL). </p>