title: How to update delivery quantity via BAPI?
body: <p>In my business scenario the WMS system post GI of deliveries and send the info to SAP.</p>
  
  <ul>
  <li>If WMS post GI for the entire quantity ==> no problem</li>
  <li>If WMS post GI for quantity &lt; delivery quantity ==> problem.</li>
  <li>I should update the delivery quantity (LIPS-LFIMG) and then post the GI.</li>
  <li>I tried with WS_DELIVERY_UPDATE and with BAPI_OUTB_DELIVERY_CHANGE without success.</li>
  </ul>
  
  <p>Have you ever faced this case?</p>