title: IDOC file generation in ecommerce system
body: <p>I want to generate an IDOC file to make shop orders availabe to the R/3 SAP System. My question is concerning <strong>BELNR</strong> in <strong>E2EDK01</strong>. As we dont have the possibility to use Webservices and BAPI, we only make the data available via files.</p>
  
  <p>Actual questions are:</p>
  
  <p>Do i yet need a <strong>[BELNR]</strong> in the IDOC file?
  If yes, where to get this <strong>[BELNR]</strong> from?</p>