title: How to extend standard screen F-41
body: <p>I need to extend T-code F-41 for <code>Xref1_HD</code>, <code>Xref2_HD</code>.</p>
  
  <p>I know there is a BAdI but I have never used neither enhancements nor BAdIs, because I am still learning.</p>
  
  <p>There is a Dynpro <code>1300</code> and BAdI <code>FI_HEADER_SUB_1300</code>, but I really do not know how to use it.</p>
  
  <p>Also I found <code>SAPLBADI_EXAMPLE_1300</code> and used it in my implementation. Is it possible to create a <code>Z</code>program and an own Dynpro to use it?</p>