diff --git a/entity/Person_entity/entityfields/selfduplicates/children/onlyshowcontactids_param/valueProcess.js b/entity/Person_entity/entityfields/selfduplicates/children/onlyshowcontactids_param/valueProcess.js
index 9bacd4c3ef26280afb97133b752f99ad33c01c46..0d12ba78972752c64fb3be7f6a02e448b38fcf65 100644
--- a/entity/Person_entity/entityfields/selfduplicates/children/onlyshowcontactids_param/valueProcess.js
+++ b/entity/Person_entity/entityfields/selfduplicates/children/onlyshowcontactids_param/valueProcess.js
@@ -3,9 +3,19 @@ import("system.vars");
 import("DuplicateScanner_lib");
 import("system.result");
 
-
 let contactIdToCheck = vars.get("$field.CONTACTID");
-logging.log("im person consumer -> " + contactIdToCheck );
-let test = JSON.stringify(DuplicateScannerUtils.GetCachedDuplicatesForContactId(contactIdToCheck))
-logging.log("test -> " + test);
-    result.string(test);
\ No newline at end of file
+
+let duplicateIds = DuplicateScannerUtils.GetCachedDuplicatesForContactId(contactIdToCheck);
+
+/*
+ * To achieve that if there are no duplicates, no contacts should be shown and therefore returned by the 
+ * recordcontainer, a "nonsense" id gets returned. It then is used in the conditionProcess.
+ * Because of its invalidity, no records are shown.
+*/
+logging.log("duplicateIds -> " + duplicateIds);
+logging.log("duplicateIds -> " + duplicateIds.length);
+
+if(duplicateIds.length == 0)
+    result.string(JSON.stringify(["nodata"]));
+else
+    result.string(JSON.stringify(duplicateIds));
\ No newline at end of file
diff --git a/entity/Person_entity/recordcontainers/db/conditionProcess.js b/entity/Person_entity/recordcontainers/db/conditionProcess.js
index dc8501cfa30968dc34190525d0341e6fcd44f021..d2f23d6e2221d533d7ec90f23241ba5a667cac52 100644
--- a/entity/Person_entity/recordcontainers/db/conditionProcess.js
+++ b/entity/Person_entity/recordcontainers/db/conditionProcess.js
@@ -12,9 +12,6 @@ var onlyShowContactIds = JSON.parse(vars.get("$param.OnlyShowContactIds_param"))
 var additionalCondition = SqlCondition.begin();
 let alternativeCondition = "1 = 1";
 
-logging.log(" onlyShowContactIds-> " + onlyShowContactIds);
-
-
 if (vars.exists("$param.ExcludedContactIds_param") && vars.get("$param.ExcludedContactIds_param"))
 {
     var excludedContacts = JSON.parse(vars.getString("$param.ExcludedContactIds_param"));
@@ -27,11 +24,12 @@ if (vars.exists("$param.ExcludedContactIds_param") && vars.get("$param.ExcludedC
 
     cond.andSqlCondition(additionalCondition, "1=1");
 }
-
-if(onlyShowContactIds != null || onlyShowContactIds.length != 0)
+if(onlyShowContactIds != null && onlyShowContactIds.length > 0)
 {
+   logging.log("hallo -> ");
     onlyShowContactIds.forEach(function(pContactId)
     {
+        logging.log("pContactId -> " + pContactId);
         additionalCondition.orPrepare("CONTACT.CONTACTID", pContactId);
     });