diff --git a/src/main/java/org/etsi/osl/tmf/sim638/service/ServiceRepoService.java b/src/main/java/org/etsi/osl/tmf/sim638/service/ServiceRepoService.java
index c63620bf8f1f10f39a390f68743a4834bc675361..6f7c787d91a530d94befc32ca4162e20ecdfe71b 100644
--- a/src/main/java/org/etsi/osl/tmf/sim638/service/ServiceRepoService.java
+++ b/src/main/java/org/etsi/osl/tmf/sim638/service/ServiceRepoService.java
@@ -1243,6 +1243,10 @@ public class ServiceRepoService {
     }
     
     
+    private String normalizeValueType(String valueType) {
+  	  return (valueType == null || valueType.isBlank()) ? "" : valueType.trim();
+	}
+
     private CharCopyResult copyCharacteristicsFromResource( @Valid Service aService, @Valid ServiceUpdate supd, @Valid Resource res) {
 
       Boolean characteristicFoundDifferent = false;
@@ -1285,20 +1289,27 @@ public class ServiceRepoService {
 
             String characteristicname = kind + resourcename + rChar.getName();
             Characteristic servChar = supd.getServiceCharacteristicByName( characteristicname );
-            if ( servChar != null && servChar.getValue() != null) {                      
-              if (! servChar.getValue().getValue().equals( rChar.getValue().getValue() ) ) {
+           
+		    if ( servChar != null && servChar.getValue() != null) {  
+			  boolean valueChanged = ! servChar.getValue().getValue().equals( rChar.getValue().getValue() );
+			  boolean typeChanged = ! normalizeValueType( servChar.getValueType() ).equals( normalizeValueType( rChar.getValueType() ) );
+			
+              if ( valueChanged || typeChanged ) {
                 characteristicFoundDifferent = true;
-                supd.getServiceCharacteristicByName( characteristicname ) .value(new Any( rChar.getValue() ));  
-                logger.debug("====================>  update characteristic: " + characteristicname +", value: "+ rChar.getValue().getValue());                      
+				servChar.value( new Any( rChar.getValue() ) );
+				servChar.setValueType( rChar.getValueType() );
+
+                logger.debug("====================>  update characteristic: " + characteristicname + ", value: " + rChar.getValue().getValue() + ", valueType: " + rChar.getValueType());                      
               }
               
             } else {
               Characteristic cNew = new Characteristic();
-              cNew.setName( characteristicname  );     
+              cNew.setName( characteristicname );     
               cNew.value( new Any( rChar.getValue() ));
+			  cNew.setValueType( rChar.getValueType());
               supd.addServiceCharacteristicItem( cNew );
               characteristicFoundDifferent = true;
-              logger.debug("====================>  add New characteristic: " + characteristicname +", value: "+ rChar.getValue().getValue());
+              logger.debug("====================>  add New characteristic: " + characteristicname +", value: " + rChar.getValue().getValue() + ", valueType: " + rChar.getValueType()); 
             }