diff --git a/data-access/servlet/src/main/java/ops/VlkbCli.java b/data-access/servlet/src/main/java/ops/VlkbCli.java
index f10ff25fd7f7c8f1e8ae2ea78b3317a2633035d3..97e4fcd03c283d3ccac7c9b889b2e1728bd678a0 100644
--- a/data-access/servlet/src/main/java/ops/VlkbCli.java
+++ b/data-access/servlet/src/main/java/ops/VlkbCli.java
@@ -36,6 +36,7 @@ import java.text.SimpleDateFormat;
 import org.json.simple.JSONArray;
 
 import vo.parameter.*;
+import vo.error.*;
 
 class VlkbCli implements Vlkb
 {
diff --git a/data-access/servlet/src/main/java/webapi/ServletCutout.java b/data-access/servlet/src/main/java/webapi/ServletCutout.java
index 459109938b7132c3329426a7d0ceadf8327a1c6a..c0d9495f43fb8fb50b16e81a905b75f6b1b70941 100644
--- a/data-access/servlet/src/main/java/webapi/ServletCutout.java
+++ b/data-access/servlet/src/main/java/webapi/ServletCutout.java
@@ -44,6 +44,7 @@ import java.nio.file.Path;
 import java.nio.file.Paths;
 
 import vo.parameter.*;
+import vo.error.*;
 
 public class ServletCutout extends HttpServlet
 {
@@ -167,22 +168,6 @@ public class ServletCutout extends HttpServlet
       }
 
 
-   protected void doMultiValuedParamNotSupported(String message, PrintWriter printWriter)
-   {
-      printWriter.println("MultiValuedParamNotSupported : " + message);
-   }
-
-   protected void doUsageError(String message, PrintWriter printWriter)
-   {
-      printWriter.println("UsageError : " + message);
-   }
-
-   protected void doError(String message, PrintWriter printWriter)
-   {
-      printWriter.println("Error : " + message);
-   }
-
-
 
    /* HTTP/J2EE -> SODA */
 
@@ -307,7 +292,7 @@ public class ServletCutout extends HttpServlet
             response.setContentType("text/plain");
             PrintWriter writer = new PrintWriter(new OutputStreamWriter(respOutputStream, RESPONSE_ENCODING));
 
-            doMultiValuedParamNotSupported(ex.getMessage(), writer);
+            Lib.doMultiValuedParamNotSupported(ex.getMessage(), writer);
 
             writer.close();
          }
@@ -319,7 +304,7 @@ public class ServletCutout extends HttpServlet
             response.setContentType("text/plain");
             PrintWriter writer = new PrintWriter(new OutputStreamWriter(respOutputStream, RESPONSE_ENCODING));
 
-            doUsageError(ex.getMessage(), writer);
+            Lib.doUsageError(ex.getMessage(), writer);
 
             writer.close();
          }
@@ -332,7 +317,7 @@ public class ServletCutout extends HttpServlet
             response.setContentType("text/plain");
             PrintWriter writer = new PrintWriter(new OutputStreamWriter(respOutputStream, RESPONSE_ENCODING));
 
-            doError(ex.toString(), writer);
+            Lib.doError(ex.toString(), writer);
 
             writer.close();
          }
diff --git a/java-libs/lib/vlkb-volib-0.9.1-SNAPSHOT.jar b/java-libs/lib/vlkb-volib-0.9.1-SNAPSHOT.jar
deleted file mode 100644
index 4af8f63066eaec4a80adaabf4e4dd13fb30d47c3..0000000000000000000000000000000000000000
Binary files a/java-libs/lib/vlkb-volib-0.9.1-SNAPSHOT.jar and /dev/null differ
diff --git a/java-libs/lib/vlkb-volib-0.9.3.jar b/java-libs/lib/vlkb-volib-0.9.3.jar
new file mode 100644
index 0000000000000000000000000000000000000000..af38dee1155e10efe07f8029b4e34110eb56dce5
Binary files /dev/null and b/java-libs/lib/vlkb-volib-0.9.3.jar differ