diff --git a/src/main/java/ch/ethz/seb/sebserver/gbl/api/APIMessage.java b/src/main/java/ch/ethz/seb/sebserver/gbl/api/APIMessage.java
index e47317e4..9c4bafb2 100644
--- a/src/main/java/ch/ethz/seb/sebserver/gbl/api/APIMessage.java
+++ b/src/main/java/ch/ethz/seb/sebserver/gbl/api/APIMessage.java
@@ -203,7 +203,7 @@ public class APIMessage implements Serializable {
         return ErrorMessage.FIELD_VALIDATION.of(fieldName, args);
     }
 
-    public static String toHTML(final String errorMessage, final List<APIMessage> messages) {
+    public static String toHTML(final String errorMessage, final Collection<APIMessage> messages) {
         final StringBuilder builder = new StringBuilder();
         builder.append("<b>Failure:</b>").append("<br/><br/>").append(errorMessage).append("<br/><br/>");
         builder.append("<b>Detail Messages:</b><br/><br/>");
@@ -220,7 +220,7 @@ public class APIMessage implements Serializable {
      * within an Exception and throw. The Exception will be caught a the
      * APIExceptionHandler endpoint. The APIMessage will be extracted
      * and send as response. */
-    public static class APIMessageException extends RuntimeException {
+    public static class APIMessageException extends RuntimeException implements APIMessageError {
 
         private static final long serialVersionUID = 1453431210820677296L;
 
@@ -246,6 +246,7 @@ public class APIMessage implements Serializable {
             this.apiMessages = Arrays.asList(errorMessage.of(detail, attributes));
         }
 
+        @Override
         public Collection<APIMessage> getAPIMessages() {
             return this.apiMessages;
         }
@@ -283,11 +284,11 @@ public class APIMessage implements Serializable {
     }
 
     public static boolean checkError(final Exception error, final ErrorMessage errorMessage) {
-        if (!(error instanceof APIMessageException)) {
+        if (!(error instanceof APIMessageError)) {
             return false;
         }
 
-        final APIMessageException _error = (APIMessageException) error;
+        final APIMessageError _error = (APIMessageError) error;
         return _error.getAPIMessages()
                 .stream()
                 .filter(msg -> errorMessage.messageCode.equals(msg.messageCode))
diff --git a/src/main/java/ch/ethz/seb/sebserver/gbl/api/APIMessageError.java b/src/main/java/ch/ethz/seb/sebserver/gbl/api/APIMessageError.java
index 8df39117..e6597fd5 100644
--- a/src/main/java/ch/ethz/seb/sebserver/gbl/api/APIMessageError.java
+++ b/src/main/java/ch/ethz/seb/sebserver/gbl/api/APIMessageError.java
@@ -8,14 +8,14 @@
 
 package ch.ethz.seb.sebserver.gbl.api;
 
-import java.util.List;
+import java.util.Collection;
 
 /** Defines an API message error holder that supplies a List of APIMessage if error happened */
 public interface APIMessageError {
 
     /** Get a List of APIMessage errors if error happened
      *
-     * @return a List of APIMessage errors if error happened or empty list of not*/
-    List<APIMessage> getErrorMessages();
+     * @return a List of APIMessage errors if error happened or empty list of not */
+    Collection<APIMessage> getAPIMessages();
 
 }
diff --git a/src/main/java/ch/ethz/seb/sebserver/gbl/model/sebconfig/SEBClientConfig.java b/src/main/java/ch/ethz/seb/sebserver/gbl/model/sebconfig/SEBClientConfig.java
index 0f292477..b1020d93 100644
--- a/src/main/java/ch/ethz/seb/sebserver/gbl/model/sebconfig/SEBClientConfig.java
+++ b/src/main/java/ch/ethz/seb/sebserver/gbl/model/sebconfig/SEBClientConfig.java
@@ -203,10 +203,16 @@ public final class SEBClientConfig implements GrantEntity, Activatable {
         this.configPurpose = configPurpose;
 
         this.sebServerPingTime = sebServerPingTime;
-        this.vdiType = vdiType;
-        this.vdiExecutable = vdiExecutable != null ? vdiExecutable : vdiType.defaultExecutable;
-        this.vdiPath = vdiPath != null ? vdiPath : vdiType.defaultPath;
-        this.vdiArguments = vdiArguments != null ? vdiArguments : vdiType.defaultArguments;
+        this.vdiType = vdiType != null ? vdiType : VDIType.NO;
+        this.vdiExecutable = vdiExecutable != null
+                ? vdiExecutable
+                : vdiType != null ? vdiType.defaultExecutable : null;
+        this.vdiPath = vdiPath != null
+                ? vdiPath
+                : vdiType != null ? vdiType.defaultPath : null;
+        this.vdiArguments = vdiArguments != null
+                ? vdiArguments
+                : vdiType != null ? vdiType.defaultArguments : null;
 
         this.fallback = fallback;
         this.fallbackStartURL = fallbackStartURL;
diff --git a/src/main/java/ch/ethz/seb/sebserver/gui/content/CertificateImportPopup.java b/src/main/java/ch/ethz/seb/sebserver/gui/content/CertificateImportPopup.java
index b380f98b..f9c98425 100644
--- a/src/main/java/ch/ethz/seb/sebserver/gui/content/CertificateImportPopup.java
+++ b/src/main/java/ch/ethz/seb/sebserver/gui/content/CertificateImportPopup.java
@@ -176,7 +176,7 @@ public class CertificateImportPopup {
         final Exception error = result.getError();
         if (error instanceof RestCallError) {
             ((RestCallError) error)
-                    .getErrorMessages()
+                    .getAPIMessages()
                     .stream()
                     .findFirst()
                     .ifPresent(message -> {
diff --git a/src/main/java/ch/ethz/seb/sebserver/gui/content/CertificateList.java b/src/main/java/ch/ethz/seb/sebserver/gui/content/CertificateList.java
index eebda06e..b68e86c4 100644
--- a/src/main/java/ch/ethz/seb/sebserver/gui/content/CertificateList.java
+++ b/src/main/java/ch/ethz/seb/sebserver/gui/content/CertificateList.java
@@ -75,6 +75,8 @@ public class CertificateList implements TemplateComposer {
             new LocTextKey("sebserver.certificate.action.import-config.confirm");
     static final LocTextKey FORM_ACTION_MESSAGE_IN_USE_TEXT_KEY =
             new LocTextKey("sebserver.certificate.action.remove.in-use");
+    static final LocTextKey FORM_ACTION_MESSAGE_REMOVE_CONFIRM_TEXT_KEY =
+            new LocTextKey("sebserver.certificate.action.remove.confirm");
 
     private final TableFilterAttribute aliasFilter = new TableFilterAttribute(
             CriteriaType.TEXT,
@@ -155,6 +157,7 @@ public class CertificateList implements TemplateComposer {
                 .publishIf(() -> grantCheck.iw())
 
                 .newAction(ActionDefinition.SEB_CERTIFICATE_REMOVE)
+                .withConfirm(() -> FORM_ACTION_MESSAGE_REMOVE_CONFIRM_TEXT_KEY)
                 .withSelect(
                         table::getSelection,
                         this::removeCertificate,
diff --git a/src/main/java/ch/ethz/seb/sebserver/gui/content/SEBClientConfigForm.java b/src/main/java/ch/ethz/seb/sebserver/gui/content/SEBClientConfigForm.java
index 562968dd..bdf96fa5 100644
--- a/src/main/java/ch/ethz/seb/sebserver/gui/content/SEBClientConfigForm.java
+++ b/src/main/java/ch/ethz/seb/sebserver/gui/content/SEBClientConfigForm.java
@@ -16,6 +16,7 @@ import org.eclipse.rap.rwt.RWT;
 import org.eclipse.rap.rwt.client.service.UrlLauncher;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Control;
 import org.eclipse.swt.widgets.Listener;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -332,14 +333,16 @@ public class SEBClientConfigForm implements TemplateComposer {
                 // VDI
 
                 .withDefaultSpanInput(2)
-                .addField(FormBuilder.singleSelection(
-                        SEBClientConfig.ATTR_VDI_TYPE,
-                        VDI_TYPE_TEXT_KEY,
-                        clientConfig.vdiType != null
-                                ? clientConfig.vdiType.name()
-                                : SEBClientConfig.VDIType.NO.name(),
-                        () -> this.pageService.getResourceService().vdiTypeResources())
-                        .mandatory(!isReadonly))
+                .addFieldIf(
+                        () -> false, // TODO skipped for version 1.2 --> 1.3 or 1.4
+                        () -> FormBuilder.singleSelection(
+                                SEBClientConfig.ATTR_VDI_TYPE,
+                                VDI_TYPE_TEXT_KEY,
+                                clientConfig.vdiType != null
+                                        ? clientConfig.vdiType.name()
+                                        : SEBClientConfig.VDIType.NO.name(),
+                                () -> this.pageService.getResourceService().vdiTypeResources())
+                                .mandatory(!isReadonly))
                 .withDefaultSpanEmptyCell(3);
 
         // VDI Attributes
@@ -472,10 +475,18 @@ public class SEBClientConfigForm implements TemplateComposer {
         };
 
         if (!isReadonly) {
-            formHandleAnchor.formHandle.getForm().getFieldInput(SEBClientConfig.ATTR_FALLBACK)
-                    .addListener(SWT.Selection, selectionListener);
-            formHandleAnchor.formHandle.getForm().getFieldInput(SEBClientConfig.ATTR_VDI_TYPE)
-                    .addListener(SWT.Selection, selectionListener);
+            final Control fallbackInput = formHandleAnchor.formHandle
+                    .getForm()
+                    .getFieldInput(SEBClientConfig.ATTR_FALLBACK);
+            if (fallbackInput != null) {
+                fallbackInput.addListener(SWT.Selection, selectionListener);
+            }
+            final Control vdiInput = formHandleAnchor.formHandle
+                    .getForm()
+                    .getFieldInput(SEBClientConfig.ATTR_VDI_TYPE);
+            if (vdiInput != null) {
+                vdiInput.addListener(SWT.Selection, selectionListener);
+            }
         }
 
         formContent.layout();
diff --git a/src/main/java/ch/ethz/seb/sebserver/gui/content/SEBExamConfigImportPopup.java b/src/main/java/ch/ethz/seb/sebserver/gui/content/SEBExamConfigImportPopup.java
index 04e882bc..e8da2b64 100644
--- a/src/main/java/ch/ethz/seb/sebserver/gui/content/SEBExamConfigImportPopup.java
+++ b/src/main/java/ch/ethz/seb/sebserver/gui/content/SEBExamConfigImportPopup.java
@@ -9,6 +9,7 @@
 package ch.ethz.seb.sebserver.gui.content;
 
 import java.io.InputStream;
+import java.util.Collection;
 import java.util.List;
 import java.util.function.Function;
 import java.util.function.Predicate;
@@ -210,7 +211,7 @@ public class SEBExamConfigImportPopup {
         final Exception error = configuration.getError();
         if (error instanceof RestCallError) {
             ((RestCallError) error)
-                    .getErrorMessages()
+                    .getAPIMessages()
                     .stream()
                     .findFirst()
                     .ifPresent(message -> {
@@ -393,8 +394,8 @@ public class SEBExamConfigImportPopup {
     private static void notifyErrorOnSave(final Exception error, final PageContext context) {
         if (error instanceof APIMessageError) {
             try {
-                final List<APIMessage> errorMessages = ((APIMessageError) error).getErrorMessages();
-                final APIMessage apiMessage = errorMessages.get(0);
+                final Collection<APIMessage> errorMessages = ((APIMessageError) error).getAPIMessages();
+                final APIMessage apiMessage = errorMessages.iterator().next();
                 if (APIMessage.ErrorMessage.INTEGRITY_VALIDATION.isOf(apiMessage)) {
                     context.publishPageMessage(new PageMessageException(MESSAGE_SAVE_INTEGRITY_VIOLATION));
                 } else {
diff --git a/src/main/java/ch/ethz/seb/sebserver/gui/content/SEBSettingsForm.java b/src/main/java/ch/ethz/seb/sebserver/gui/content/SEBSettingsForm.java
index 16fd1682..439eff48 100644
--- a/src/main/java/ch/ethz/seb/sebserver/gui/content/SEBSettingsForm.java
+++ b/src/main/java/ch/ethz/seb/sebserver/gui/content/SEBSettingsForm.java
@@ -9,6 +9,7 @@
 package ch.ethz.seb.sebserver.gui.content;
 
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.List;
 import java.util.function.Function;
 
@@ -324,8 +325,8 @@ public class SEBSettingsForm implements TemplateComposer {
     public void notifyErrorOnSave(final Exception error, final PageContext context) {
         if (error instanceof APIMessageError) {
             try {
-                final List<APIMessage> errorMessages = ((APIMessageError) error).getErrorMessages();
-                final APIMessage apiMessage = errorMessages.get(0);
+                final Collection<APIMessage> errorMessages = ((APIMessageError) error).getAPIMessages();
+                final APIMessage apiMessage = errorMessages.iterator().next();
                 if (APIMessage.ErrorMessage.INTEGRITY_VALIDATION.isOf(apiMessage)) {
                     throw new PageMessageException(MESSAGE_SAVE_INTEGRITY_VIOLATION);
                 } else {
diff --git a/src/main/java/ch/ethz/seb/sebserver/gui/form/FormHandle.java b/src/main/java/ch/ethz/seb/sebserver/gui/form/FormHandle.java
index 54b3b365..3b27f860 100644
--- a/src/main/java/ch/ethz/seb/sebserver/gui/form/FormHandle.java
+++ b/src/main/java/ch/ethz/seb/sebserver/gui/form/FormHandle.java
@@ -144,13 +144,13 @@ public class FormHandle<T extends Entity> {
         if (error instanceof RestCallError) {
 
             final List<APIMessage> fieldValidationErrors = ((RestCallError) error)
-                    .getErrorMessages()
+                    .getAPIMessages()
                     .stream()
                     .filter(APIMessage.ErrorMessage.FIELD_VALIDATION::isOf)
                     .collect(Collectors.toList());
 
             final List<APIMessage> noneFieldValidationErrors = ((RestCallError) error)
-                    .getErrorMessages()
+                    .getAPIMessages()
                     .stream()
                     .filter(message -> !APIMessage.ErrorMessage.FIELD_VALIDATION.isOf(message))
                     .collect(Collectors.toList());
diff --git a/src/main/java/ch/ethz/seb/sebserver/gui/service/examconfig/impl/ExamConfigurationServiceImpl.java b/src/main/java/ch/ethz/seb/sebserver/gui/service/examconfig/impl/ExamConfigurationServiceImpl.java
index 07cad3cf..b27c63cf 100644
--- a/src/main/java/ch/ethz/seb/sebserver/gui/service/examconfig/impl/ExamConfigurationServiceImpl.java
+++ b/src/main/java/ch/ethz/seb/sebserver/gui/service/examconfig/impl/ExamConfigurationServiceImpl.java
@@ -390,7 +390,7 @@ public class ExamConfigurationServiceImpl implements ExamConfigurationService {
 
         private String verifyErrorMessage(final Exception error) {
             if (error instanceof RestCallError) {
-                final List<APIMessage> errorMessages = ((RestCallError) error).getErrorMessages();
+                final List<APIMessage> errorMessages = ((RestCallError) error).getAPIMessages();
                 if (errorMessages.isEmpty()) {
                     return "";
                 }
diff --git a/src/main/java/ch/ethz/seb/sebserver/gui/service/page/impl/PageContextImpl.java b/src/main/java/ch/ethz/seb/sebserver/gui/service/page/impl/PageContextImpl.java
index 16170cbd..ff12ffb3 100644
--- a/src/main/java/ch/ethz/seb/sebserver/gui/service/page/impl/PageContextImpl.java
+++ b/src/main/java/ch/ethz/seb/sebserver/gui/service/page/impl/PageContextImpl.java
@@ -9,6 +9,7 @@
 package ch.ethz.seb.sebserver.gui.service.page.impl;
 
 import java.util.Arrays;
+import java.util.Collection;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
@@ -332,7 +333,7 @@ public class PageContextImpl implements PageContext {
                 : error.getMessage();
 
         if (error instanceof APIMessageError) {
-            final List<APIMessage> errorMessages = ((APIMessageError) error).getErrorMessages();
+            final Collection<APIMessage> errorMessages = ((APIMessageError) error).getAPIMessages();
             final MessageBox messageBox = new Message(
                     getShell(),
                     this.i18nSupport.getText("sebserver.error.unexpected"),
diff --git a/src/main/java/ch/ethz/seb/sebserver/gui/service/remote/webservice/api/RestCallError.java b/src/main/java/ch/ethz/seb/sebserver/gui/service/remote/webservice/api/RestCallError.java
index ed71d178..1ed226ce 100644
--- a/src/main/java/ch/ethz/seb/sebserver/gui/service/remote/webservice/api/RestCallError.java
+++ b/src/main/java/ch/ethz/seb/sebserver/gui/service/remote/webservice/api/RestCallError.java
@@ -38,7 +38,7 @@ public class RestCallError extends RuntimeException implements APIMessageError {
     }
 
     @Override
-    public List<APIMessage> getErrorMessages() {
+    public List<APIMessage> getAPIMessages() {
         return this.errors;
     }
 
diff --git a/src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/dao/impl/CertificateDAOImpl.java b/src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/dao/impl/CertificateDAOImpl.java
index 086877c0..27a15314 100644
--- a/src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/dao/impl/CertificateDAOImpl.java
+++ b/src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/dao/impl/CertificateDAOImpl.java
@@ -223,12 +223,7 @@ public class CertificateDAOImpl implements CertificateDAO {
 
         // dataEncipherment
         if (keyUsage[2] || keyUsage[3]) {
-            final String alias = certificates.keyStore.engineGetCertificateAlias(cert);
-            if (this.cryptor.getPrivateKey(certificates.keyStore, alias).hasValue()) {
-                result.add(CertificateType.DATA_ENCIPHERMENT_PRIVATE_KEY);
-            } else {
-                result.add(CertificateType.DATA_ENCIPHERMENT);
-            }
+            result.add(CertificateType.DATA_ENCIPHERMENT);
         }
 
         // keyCertSign
@@ -240,6 +235,11 @@ public class CertificateDAOImpl implements CertificateDAO {
             result.add(CertificateType.UNKNOWN);
         }
 
+        final String alias = certificates.keyStore.engineGetCertificateAlias(cert);
+        if (this.cryptor.getPrivateKey(certificates.keyStore, alias).hasValue()) {
+            result.add(CertificateType.DATA_ENCIPHERMENT_PRIVATE_KEY);
+        }
+
         return result;
     }
 
diff --git a/src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/sebconfig/impl/AbstractCertificateCryptor.java b/src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/sebconfig/impl/AbstractCertificateCryptor.java
index b709061a..4da634c7 100644
--- a/src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/sebconfig/impl/AbstractCertificateCryptor.java
+++ b/src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/sebconfig/impl/AbstractCertificateCryptor.java
@@ -85,7 +85,7 @@ public abstract class AbstractCertificateCryptor {
 
         final String algorithm = cert.getPublicKey().getAlgorithm();
         final Cipher encryptCipher = Cipher.getInstance(algorithm);
-        encryptCipher.init(Cipher.ENCRYPT_MODE, cert);
+        encryptCipher.init(Cipher.ENCRYPT_MODE, cert.getPublicKey());
         return encryptCipher.doFinal(data, 0, length);
     }
 
@@ -99,7 +99,7 @@ public abstract class AbstractCertificateCryptor {
 
         final String algorithm = cert.getPublicKey().getAlgorithm();
         final Cipher encryptCipher = Cipher.getInstance(algorithm);
-        encryptCipher.init(Cipher.DECRYPT_MODE, cert);
+        encryptCipher.init(Cipher.DECRYPT_MODE, cert.getPublicKey());
         return encryptCipher.doFinal(encryptedData, 0, length);
     }
 
diff --git a/src/main/resources/messages.properties b/src/main/resources/messages.properties
index 8e867285..265bdb92 100644
--- a/src/main/resources/messages.properties
+++ b/src/main/resources/messages.properties
@@ -1607,6 +1607,7 @@ sebserver.certificate.action.import.missing-password=The certificate file needs
 sebserver.certificate.action.import-config.confirm=Certificate(s) successfully imported
 sebserver.certificate.message.error.file=Unsupported file type
 sebserver.certificate.action.import-file-select.no=Please select a valid file
+sebserver.certificate.action.remove.confirm=Are you sure you want delete the selected Certificate(s)?
 sebserver.certificate.action.remove.in-use=This certificate is in use and cannot be removed.
 
 
diff --git a/src/test/java/ch/ethz/seb/sebserver/gui/integration/UseCasesIntegrationTest.java b/src/test/java/ch/ethz/seb/sebserver/gui/integration/UseCasesIntegrationTest.java
index 7c87c598..1730d649 100644
--- a/src/test/java/ch/ethz/seb/sebserver/gui/integration/UseCasesIntegrationTest.java
+++ b/src/test/java/ch/ethz/seb/sebserver/gui/integration/UseCasesIntegrationTest.java
@@ -381,7 +381,7 @@ public class UseCasesIntegrationTest extends GuiIntegrationTest {
         RestCallError error = (RestCallError) call.getError();
         assertEquals(
                 "[APIMessage [messageCode=1001, systemMessage=FORBIDDEN, details=No edit right grant for user: TestInstAdmin, attributes=[]]]",
-                String.valueOf(error.getErrorMessages()));
+                String.valueOf(error.getAPIMessages()));
 
         // change password
         final Result<UserInfo> passwordChange = restService
@@ -400,7 +400,7 @@ public class UseCasesIntegrationTest extends GuiIntegrationTest {
         error = (RestCallError) instNames.getError();
         assertEquals(
                 "UNAUTHORIZED",
-                String.valueOf(error.getErrorMessages().get(0).getSystemMessage()));
+                String.valueOf(error.getAPIMessages().get(0).getSystemMessage()));
 
         // login again with the new password and check roles
         restService = createRestServiceForUser(
@@ -2339,7 +2339,7 @@ public class UseCasesIntegrationTest extends GuiIntegrationTest {
                     .getOrThrow();
             fail("Forbidden error message expected here");
         } catch (final RestCallError e) {
-            final APIMessage apiMessage = e.getErrorMessages().get(0);
+            final APIMessage apiMessage = e.getAPIMessages().get(0);
             assertEquals("1001", apiMessage.messageCode);
             assertEquals("FORBIDDEN", apiMessage.systemMessage);
         }
@@ -2395,7 +2395,7 @@ public class UseCasesIntegrationTest extends GuiIntegrationTest {
                     .getOrThrow();
             fail("no resource found exception expected here");
         } catch (final RestCallError e) {
-            final APIMessage apiMessage = e.getErrorMessages().get(0);
+            final APIMessage apiMessage = e.getAPIMessages().get(0);
             assertEquals("1002", apiMessage.getMessageCode());
             assertEquals("resource not found", apiMessage.getSystemMessage());
         }
@@ -2408,7 +2408,7 @@ public class UseCasesIntegrationTest extends GuiIntegrationTest {
                     .getOrThrow();
             fail("no resource found exception expected here");
         } catch (final RestCallError e) {
-            final APIMessage apiMessage = e.getErrorMessages().get(0);
+            final APIMessage apiMessage = e.getAPIMessages().get(0);
             assertEquals("1002", apiMessage.getMessageCode());
             assertEquals("resource not found", apiMessage.getSystemMessage());
         }
@@ -2419,7 +2419,7 @@ public class UseCasesIntegrationTest extends GuiIntegrationTest {
                     .getOrThrow();
             fail("no resource found exception expected here");
         } catch (final RestCallError e) {
-            final APIMessage apiMessage = e.getErrorMessages().get(0);
+            final APIMessage apiMessage = e.getAPIMessages().get(0);
             assertEquals("1002", apiMessage.getMessageCode());
             assertEquals("resource not found", apiMessage.getSystemMessage());
         }
@@ -2430,7 +2430,7 @@ public class UseCasesIntegrationTest extends GuiIntegrationTest {
                     .getOrThrow();
             fail("no resource found exception expected here");
         } catch (final RestCallError e) {
-            final APIMessage apiMessage = e.getErrorMessages().get(0);
+            final APIMessage apiMessage = e.getAPIMessages().get(0);
             assertEquals("1002", apiMessage.getMessageCode());
             assertEquals("resource not found", apiMessage.getSystemMessage());
         }
@@ -2441,7 +2441,7 @@ public class UseCasesIntegrationTest extends GuiIntegrationTest {
                     .getOrThrow();
             fail("no resource found exception expected here");
         } catch (final RestCallError e) {
-            final APIMessage apiMessage = e.getErrorMessages().get(0);
+            final APIMessage apiMessage = e.getAPIMessages().get(0);
             assertEquals("1002", apiMessage.getMessageCode());
             assertEquals("resource not found", apiMessage.getSystemMessage());
         }
@@ -2452,7 +2452,7 @@ public class UseCasesIntegrationTest extends GuiIntegrationTest {
                     .getOrThrow();
             fail("no resource found exception expected here");
         } catch (final RestCallError e) {
-            final APIMessage apiMessage = e.getErrorMessages().get(0);
+            final APIMessage apiMessage = e.getAPIMessages().get(0);
             assertEquals("1002", apiMessage.getMessageCode());
             assertEquals("resource not found", apiMessage.getSystemMessage());
         }
@@ -2463,7 +2463,7 @@ public class UseCasesIntegrationTest extends GuiIntegrationTest {
                     .getOrThrow();
             fail("no resource found exception expected here");
         } catch (final RestCallError e) {
-            final APIMessage apiMessage = e.getErrorMessages().get(0);
+            final APIMessage apiMessage = e.getAPIMessages().get(0);
             assertEquals("1002", apiMessage.getMessageCode());
             assertEquals("resource not found", apiMessage.getSystemMessage());
         }