E-Commerce II Wissen Nachtrag ebXML !!! Listing 1 2001-05-20T07:21:00Z 2002-05-20T07:21:00Z 123456789 HTTP HTTP SSL HTTP SMTP 987654321 buy/sell agreement between example.com and contrived-example.com !!!Listing 2 timeToPerform = Period: 2 days from start of transaction