diff --git a/process/Leadimport_lib/process.js b/process/Leadimport_lib/process.js
index 6b5411de5e50467baf46d387ebd79b005dbf6f8c..66db58645e63f46b287f4f1474ac2b2f0f537d95 100644
--- a/process/Leadimport_lib/process.js
+++ b/process/Leadimport_lib/process.js
@@ -153,6 +153,7 @@ LeadImportUtils.loadImportFile = function(pBinId, pFieldSep, pFieldLimit, pRecor
  */
 LeadImportUtils.importData = function(pDataFields, pDataTypes, pFieldDef, pFieldValues, pImportDefID, pAttrObject, pSource, pUser, pDate)
 {
+    // set the mappings
     LeadImportUtils.mapping = LeadImportUtils.getMapping(pImportDefID);
     
     var LeadValues = LeadImportUtils.setValues(pDataFields["LEAD"], pFieldDef, pFieldValues); // set the Lead values
@@ -222,6 +223,14 @@ LeadImportUtils.importData = function(pDataFields, pDataTypes, pFieldDef, pField
     return [leadId, persForDubCheck, orgsForDubCheck];
 }
 
+
+/**
+ * get all Mapping to a Leadimport
+ *
+ * @param {String} pleadimportId the ID of a Leadimport
+ * 
+ * @return {Object} an associative array in format arr[fieldname][inputvalue] --> outputvalue
+ */
 LeadImportUtils.getMapping = function(pleadimportId) 
 {
     let tempData = {};
@@ -230,7 +239,7 @@ LeadImportUtils.getMapping = function(pleadimportId)
     .where("LEADIMPORTMAPPINGASSISTANT.LEADIMPORT_ID", pleadimportId)
     .table().forEach(function (d) {
         if (tempData[d[0]] == undefined	)
-            tempData[d[0]] =  {} //[[d[1], d[2]]]
+            tempData[d[0]] =  {}
         tempData[d[0]][d[1]] = d[2];
     });
     return tempData;
@@ -325,6 +334,7 @@ LeadImportUtils.setValues  = function(pFields, pFieldDef, pFieldValues)
                     LeadImportUtils.mapping[pFieldDef[i][1]] != undefined && 
                     LeadImportUtils.mapping[pFieldDef[i][1]][pFieldValues[pFieldDef[i][0]]] != undefined) 
                 {
+                    // mapping is available and is set
                     pFieldValues[pFieldDef[i][0]] = LeadImportUtils.mapping[pFieldDef[i][1]][pFieldValues[pFieldDef[i][0]]];
                 }