diff --git a/mapping/XSL_SYSPRO_DELIVERY/DELIVERY.xsl b/mapping/XSL_SYSPRO_DELIVERY/DELIVERY.xsl
index e9f6e44..c3c7b22 100644
--- a/mapping/XSL_SYSPRO_DELIVERY/DELIVERY.xsl
+++ b/mapping/XSL_SYSPRO_DELIVERY/DELIVERY.xsl
@@ -23,7 +23,9 @@
 <!-- Template für IDOC: eine einzige XMLDESADV -->
 <xsl:template match="ZFSHDLV/IDOC">
   <XMLDESADV>
-    <!-- Header -->
+
+    <xsl:comment>SAP IDOC Number: <xsl:value-of select="EDI_DC40/DOCNUM"/> </xsl:comment>
+
     <XMLDESADVHEADER>
       <!-- DocumentId mit erster SSCC -->
       <DocumentId>
@@ -97,7 +99,7 @@
     <!-- Package Group -->
     <XMLPACKAGEGROUP>
       <NumberOfPackages>
-        <xsl:value-of select="if (E1EDL20/ANZPK)
+        <xsl:value-of select="if (E1EDL20/ANZPK and number(E1EDL20/ANZPK) > 0)
                               then format-number(E1EDL20/ANZPK, '#')
                               else '1'"/>
       </NumberOfPackages>