diff --git a/src-modules/org/opencms/workplace/commons/CmsChacc.java b/src-modules/org/opencms/workplace/commons/CmsChacc.java
index 6a415553886..3f4ec0dbbad 100644
--- a/src-modules/org/opencms/workplace/commons/CmsChacc.java
+++ b/src-modules/org/opencms/workplace/commons/CmsChacc.java
@@ -793,7 +793,7 @@ public String buildRightsList() {
         } catch (CmsException e) {
             // can usually be ignored
             if (LOG.isInfoEnabled()) {
-                LOG.info(e.getLocalizedMessage());
+                LOG.info("Unexpected error: mobb-953979d6e5acb3d1274cff45fcaefe16");
             }
         }
 
diff --git a/src/org/opencms/ade/configuration/CmsGlobalConfigurationCacheEventHandler.java b/src/org/opencms/ade/configuration/CmsGlobalConfigurationCacheEventHandler.java
index 4d8c8f9ca59..0067229d140 100644
--- a/src/org/opencms/ade/configuration/CmsGlobalConfigurationCacheEventHandler.java
+++ b/src/org/opencms/ade/configuration/CmsGlobalConfigurationCacheEventHandler.java
@@ -232,7 +232,7 @@ public void cmsEvent(CmsEvent event) {
                             }
                         }
                     } catch (CmsException e) {
-                        LOG.error(e.getLocalizedMessage(), e);
+                        LOG.error("Unexpected error: mobb-a3f4e2714e86af76cc3b9187c646d614", e);
                     }
                 }
                 break;
diff --git a/src/org/opencms/ade/containerpage/CmsDetailOnlyContainerUtil.java b/src/org/opencms/ade/containerpage/CmsDetailOnlyContainerUtil.java
index 3554a712606..856dd9bc9cb 100644
--- a/src/org/opencms/ade/containerpage/CmsDetailOnlyContainerUtil.java
+++ b/src/org/opencms/ade/containerpage/CmsDetailOnlyContainerUtil.java
@@ -423,7 +423,7 @@ public static CmsResource readOrCreateDetailOnlyPage(CmsObject cms, CmsUUID deta
                 }
             }
         } catch (CmsException e) {
-            CmsContainerpageService.LOG.error(e.getLocalizedMessage(), e);
+            CmsContainerpageService.LOG.error(e.getLocalizedMessage(), "Unexpected error: mobb-2137dc7850f7ec7be341e9ef70e10647");
         }
         return containerpage;
     }
diff --git a/src/org/opencms/db/CmsUserSettings.java b/src/org/opencms/db/CmsUserSettings.java
index f3c8dded4b0..a4b13d3bb6d 100644
--- a/src/org/opencms/db/CmsUserSettings.java
+++ b/src/org/opencms/db/CmsUserSettings.java
@@ -1288,7 +1288,7 @@ public void init(CmsUser user) {
         } catch (CmsException e) {
             // ignore
             if (LOG.isWarnEnabled()) {
-                LOG.warn(e.getLocalizedMessage(), e);
+                LOG.warn("Unexpected error: mobb-7f34046dc87ac0d2ea5a680301d2abbe", e);
             }
         }
     }
diff --git a/src/org/opencms/gwt/A_CmsClientMessageBundle.java b/src/org/opencms/gwt/A_CmsClientMessageBundle.java
index 902c043f585..45ada860110 100644
--- a/src/org/opencms/gwt/A_CmsClientMessageBundle.java
+++ b/src/org/opencms/gwt/A_CmsClientMessageBundle.java
@@ -171,7 +171,7 @@ public String importMessage(String key, Locale locale) {
             I_CmsMessageBundle bundle = (I_CmsMessageBundle)(messagesGet.invoke(null));
             return bundle.getBundle(locale).key(messageName);
         } catch (Exception e) {
-            LOG.error(e.getLocalizedMessage(), e);
+            LOG.error("Unexpected error: mobb-60966fab7ec377d4663efbf7b6d4fb16", e);
             return null;
         }
     }
diff --git a/src/org/opencms/gwt/CmsDefaultResourceStatusProvider.java b/src/org/opencms/gwt/CmsDefaultResourceStatusProvider.java
index c81384ab6aa..85e16fe65a5 100644
--- a/src/org/opencms/gwt/CmsDefaultResourceStatusProvider.java
+++ b/src/org/opencms/gwt/CmsDefaultResourceStatusProvider.java
@@ -686,7 +686,7 @@ protected List<CmsResourceStatusRelationBean> getTargets(
                     result.add(relationBean);
                 }
             } catch (CmsException e) {
-                LOG.error(e.getLocalizedMessage(), e);
+                LOG.error("Unexpected error: mobb-941f4ebe540dde752205eef7c575d8df", e);
             }
         }
         return result;
diff --git a/src/org/opencms/jsp/userdata/CmsUserDataResourceHandler.java b/src/org/opencms/jsp/userdata/CmsUserDataResourceHandler.java
index 17e0704d34f..881a2bb6887 100644
--- a/src/org/opencms/jsp/userdata/CmsUserDataResourceHandler.java
+++ b/src/org/opencms/jsp/userdata/CmsUserDataResourceHandler.java
@@ -135,7 +135,7 @@ public CmsResource initResource(
         } catch (CmsResourceInitException e) {
             throw e;
         } catch (Exception e) {
-            LOG.error(e.getLocalizedMessage(), e);
+            LOG.error("Unexpected error: mobb-482c6b4ddca61f9861989ab83df9f8ac", e);
         }
         return null;
 
diff --git a/src/org/opencms/jsp/util/CmsJspStandardContextBean.java b/src/org/opencms/jsp/util/CmsJspStandardContextBean.java
index 181822773d1..0655457eaa5 100644
--- a/src/org/opencms/jsp/util/CmsJspStandardContextBean.java
+++ b/src/org/opencms/jsp/util/CmsJspStandardContextBean.java
@@ -1579,7 +1579,7 @@ public Object transform(Object input) {
                         return wrapper;
 
                     } catch (CmsException e) {
-                        LOG.debug(e.getLocalizedMessage(), e);
+                        LOG.debug("Unexpected error: mobb-11aaf39cee80eadea77526bf2ed4818b", e);
                         return new CmsDynamicFunctionBeanWrapper(m_cms, null);
                     }
                 }
diff --git a/src/org/opencms/relations/CmsRelationDeleteValidator.java b/src/org/opencms/relations/CmsRelationDeleteValidator.java
index 58756773c5f..e3474e5a25c 100644
--- a/src/org/opencms/relations/CmsRelationDeleteValidator.java
+++ b/src/org/opencms/relations/CmsRelationDeleteValidator.java
@@ -220,7 +220,7 @@ private Map<String, List<CmsRelation>> getBrokenRelations(List<String> resourceN
                     } catch (CmsException e) {
                         // should never happen
                         if (LOG.isErrorEnabled()) {
-                            LOG.error(e.getLocalizedMessage(), e);
+                            LOG.error("Unexpected error: mobb-493cab2b752824ff4b96c70645f8f88f", e);
                         }
                     }
                 }
diff --git a/src/org/opencms/site/xmlsitemap/CmsXmlSitemapActionElement.java b/src/org/opencms/site/xmlsitemap/CmsXmlSitemapActionElement.java
index 6713d55664a..fe835c16e61 100644
--- a/src/org/opencms/site/xmlsitemap/CmsXmlSitemapActionElement.java
+++ b/src/org/opencms/site/xmlsitemap/CmsXmlSitemapActionElement.java
@@ -103,7 +103,7 @@ public static CmsXmlSitemapGenerator createSitemapGenerator(String className, St
         } catch (Exception e) {
             LOG.error(
                 "Could not create configured sitemap generator " + className + ", using the default class instead",
-                e);
+                "Unexpected error: mobb-99e77fe2dbea38efb5a3ddde678ff4aa");
             return new CmsXmlSitemapGenerator(folderRootPath);
         }
     }
diff --git a/src/org/opencms/util/CmsHtmlTagRemoveFactory.java b/src/org/opencms/util/CmsHtmlTagRemoveFactory.java
index c225e4a589d..f14d2b2a7f0 100644
--- a/src/org/opencms/util/CmsHtmlTagRemoveFactory.java
+++ b/src/org/opencms/util/CmsHtmlTagRemoveFactory.java
@@ -634,7 +634,7 @@ public Tag createTagNode(Page arg0, int arg1, int arg2, Vector arg3) {
             if (LOG.isErrorEnabled()) {
                 // log here, as htmlparser 1.5 did swallow exceptions from here and threw NPEs from
                 // other places
-                LOG.error(rte);
+                LOG.error("Unexpected error: mobb-7883cdd2c3cb29fc10cd02ad44de6e14");
             }
             throw rte;
         }
diff --git a/src/org/opencms/workplace/CmsWorkplaceManager.java b/src/org/opencms/workplace/CmsWorkplaceManager.java
index 831e0cd5dd0..1d227baad4d 100644
--- a/src/org/opencms/workplace/CmsWorkplaceManager.java
+++ b/src/org/opencms/workplace/CmsWorkplaceManager.java
@@ -1736,7 +1736,7 @@ public synchronized void initialize(CmsObject cms) throws CmsException, CmsRoleV
                         } catch (ClassNotFoundException e) {
                             LOG.error(e.getLocalizedMessage());
                         } catch (InstantiationException e) {
-                            LOG.error(e.getLocalizedMessage());
+                            LOG.error("Unexpected error: mobb-e72051dd79cf3289d3ecac13fd372aac");
                         } catch (IllegalAccessException e) {
                             LOG.error(e.getLocalizedMessage());
                         }
diff --git a/src/org/opencms/workplace/editors/CmsEditor.java b/src/org/opencms/workplace/editors/CmsEditor.java
index 3e6457471c5..569b1cf6e1f 100644
--- a/src/org/opencms/workplace/editors/CmsEditor.java
+++ b/src/org/opencms/workplace/editors/CmsEditor.java
@@ -274,7 +274,7 @@ public String buildSelectElementLanguage(String attributes, String resourceName,
         } catch (CmsException e) {
             // to nothing here in case the resource could not be opened
             if (LOG.isErrorEnabled()) {
-                LOG.error(Messages.get().getBundle().key(Messages.LOG_GET_LOCALES_1, resourceName), e);
+                LOG.error(Messages.get().getBundle().key(Messages.LOG_GET_LOCALES_1, resourceName), "Unexpected error: mobb-af9bc5f61705b7e1444b12ae02198540");
             }
         }