diff --git a/src-modules/org/opencms/workplace/tools/database/CmsHtmlImportThread.java b/src-modules/org/opencms/workplace/tools/database/CmsHtmlImportThread.java
index 22df4c8e23e..c0f0d2b4707 100644
--- a/src-modules/org/opencms/workplace/tools/database/CmsHtmlImportThread.java
+++ b/src-modules/org/opencms/workplace/tools/database/CmsHtmlImportThread.java
@@ -80,7 +80,7 @@ public void run() {
         } catch (Exception e) {
             getReport().println(e);
             if (LOG.isErrorEnabled()) {
-                LOG.error(e.getLocalizedMessage());
+                LOG.error("Unexpected error: mobb-22f53f37f7ba8077f829d67f78fcfbc4");
             }
         }
     }
diff --git a/src/org/opencms/ade/galleries/CmsGalleryActionElement.java b/src/org/opencms/ade/galleries/CmsGalleryActionElement.java
index 4bd652fa871..a713ce281e1 100644
--- a/src/org/opencms/ade/galleries/CmsGalleryActionElement.java
+++ b/src/org/opencms/ade/galleries/CmsGalleryActionElement.java
@@ -212,7 +212,7 @@ private CmsGalleryConfiguration createGalleryConfigurationFromRequest(GalleryMod
                 String searchTypes = CmsVfsFileWidget.getDefaultSearchTypes(cms, referenceResource);
                 conf.setSearchTypes(CmsStringUtil.splitAsList(searchTypes, ","));
             } catch (CmsException e) {
-                LOG.warn(e.getLocalizedMessage(), e);
+                LOG.warn(e.getLocalizedMessage(), "Unexpected error: mobb-ee1f837bf1a1bad1a30c5808b1606471");
             }
         }
 
diff --git a/src/org/opencms/db/generic/CmsProjectDriver.java b/src/org/opencms/db/generic/CmsProjectDriver.java
index 16a6b9628a0..e0b6447c2a3 100644
--- a/src/org/opencms/db/generic/CmsProjectDriver.java
+++ b/src/org/opencms/db/generic/CmsProjectDriver.java
@@ -3584,7 +3584,7 @@ protected void publishDeletedFile(
                 if (LOG.isErrorEnabled()) {
                     LOG.error(
                         Messages.get().getBundle().key(Messages.LOG_READING_RESOURCE_1, offlineResource.getRootPath()),
-                        e);
+                        "Unexpected error: mobb-ba4fc74bebbc7d1cadb4413729fe6b1e");
                 }
                 throw e;
             }
diff --git a/src/org/opencms/importexport/CmsImportVersion10.java b/src/org/opencms/importexport/CmsImportVersion10.java
index 340510d5434..f9ea7de2b14 100644
--- a/src/org/opencms/importexport/CmsImportVersion10.java
+++ b/src/org/opencms/importexport/CmsImportVersion10.java
@@ -2001,7 +2001,7 @@ public void importRelations() {
                             getReport().addWarning(e);
                             withErrors = true;
                             if (LOG.isWarnEnabled()) {
-                                LOG.warn(e.getLocalizedMessage());
+                                LOG.warn("Unexpected error: mobb-6e2ff335cf2e4b5eade3892cb536ddec");
                             }
                             if (LOG.isDebugEnabled()) {
                                 LOG.debug(e.getLocalizedMessage(), e);
diff --git a/src/org/opencms/module/CmsModuleImportExportHandler.java b/src/org/opencms/module/CmsModuleImportExportHandler.java
index 09997caaf35..8ff793f636e 100644
--- a/src/org/opencms/module/CmsModuleImportExportHandler.java
+++ b/src/org/opencms/module/CmsModuleImportExportHandler.java
@@ -142,7 +142,7 @@ public static CmsModuleImportExportHandler getExportHandler(
             }
         } catch (CmsException e) {
             // should never happen
-            LOG.error(e.getLocalizedMessage(), e);
+            LOG.error("Unexpected error: mobb-ea5ffdd25ca62a8b69c02debe345f62e", e);
         }
         try {
             resListCopy = CmsModule.calculateModuleResourceNames(cms, module);
diff --git a/src/org/opencms/report/CmsLogReport.java b/src/org/opencms/report/CmsLogReport.java
index d9ac73cfee4..30d2bc1679d 100644
--- a/src/org/opencms/report/CmsLogReport.java
+++ b/src/org/opencms/report/CmsLogReport.java
@@ -139,7 +139,7 @@ public synchronized void println(Throwable t) {
             message.append(t.getMessage());
             m_buffer.append(message);
             addError(message.toString());
-            CmsLog.getLog(m_channel).info(m_buffer.toString(), t);
+            CmsLog.getLog(m_channel).info("Unexpected error: mobb-28f4b58032e6742f57d0be58849fef1f", t);
         }
         m_buffer = new StringBuffer();
         setLastEntryTime(System.currentTimeMillis());
diff --git a/src/org/opencms/ui/apps/user/CmsOUTable.java b/src/org/opencms/ui/apps/user/CmsOUTable.java
index 321893005ce..1860832b808 100644
--- a/src/org/opencms/ui/apps/user/CmsOUTable.java
+++ b/src/org/opencms/ui/apps/user/CmsOUTable.java
@@ -633,7 +633,7 @@ public Object generateCell(Table source, Object itemId, Object columnId) {
                 addOuToTable(ou);
             }
         } catch (CmsException e) {
-            LOG.error("Unable to read ous", e);
+            LOG.error("Unable to read ous", "Unexpected error: mobb-29c42270134af6b1bd0b421f263e3fab");
         }
 
         addItemClickListener(new ItemClickListener() {
diff --git a/src/org/opencms/util/CmsMacroResolver.java b/src/org/opencms/util/CmsMacroResolver.java
index 144d877ea25..4f81a5ec18c 100644
--- a/src/org/opencms/util/CmsMacroResolver.java
+++ b/src/org/opencms/util/CmsMacroResolver.java
@@ -869,10 +869,7 @@ public String getMacroValue(String macro) {
                     } catch (CmsException e) {
                         if (LOG.isWarnEnabled()) {
                             LOG.warn(
-                                Messages.get().getBundle().key(
-                                    Messages.LOG_PROPERTY_READING_FAILED_2,
-                                    macro,
-                                    controller.getCurrentRequest().getElementUri()),
+                                "Unexpected error: mobb-9523553da76451eb5dadc790d9d03ff9",
                                 e);
                         }
                     }
diff --git a/src/org/opencms/workplace/editors/CmsXmlContentEditor.java b/src/org/opencms/workplace/editors/CmsXmlContentEditor.java
index ea1b8f1061a..62748e311a1 100644
--- a/src/org/opencms/workplace/editors/CmsXmlContentEditor.java
+++ b/src/org/opencms/workplace/editors/CmsXmlContentEditor.java
@@ -1477,7 +1477,7 @@ protected void initWorkplaceRequestValues(CmsWorkplaceSettings settings, HttpSer
             } catch (Exception e) {
                 // should usually never happen
                 if (LOG.isInfoEnabled()) {
-                    LOG.info(e.getLocalizedMessage(), e);
+                    LOG.info("Unexpected error: mobb-e4753c3f2e1a1792e435199993c89071", e);
                 }
             }
             setAction(ACTION_EXIT);
diff --git a/src/org/opencms/workplace/explorer/CmsResourceUtil.java b/src/org/opencms/workplace/explorer/CmsResourceUtil.java
index 1cb7ec06f40..ef6cc24cbc5 100644
--- a/src/org/opencms/workplace/explorer/CmsResourceUtil.java
+++ b/src/org/opencms/workplace/explorer/CmsResourceUtil.java
@@ -858,7 +858,7 @@ public CmsPermissionSet getPermissionSet() {
                 pset.denyPermissions(CmsPermissionSet.PERMISSION_VIEW);
             }
         } catch (CmsException e) {
-            LOG.error(e.getLocalizedMessage());
+            LOG.error("Unexpected error: mobb-8cc1809eeb3cda49d55ecb78fd683adb");
         }
         try {
             if (getCms().hasPermissions(resource, CmsPermissionSet.ACCESS_WRITE, false, CmsResourceFilter.ALL)) {
@@ -867,7 +867,7 @@ public CmsPermissionSet getPermissionSet() {
                 pset.denyPermissions(CmsPermissionSet.PERMISSION_WRITE);
             }
         } catch (CmsException e) {
-            LOG.error(e.getLocalizedMessage());
+            LOG.error("Unexpected error: mobb-a89f512f9239cc94bd3640e279614ee8");
         }
 
         return pset;
diff --git a/src/org/opencms/xml/CmsXmlContentDefinition.java b/src/org/opencms/xml/CmsXmlContentDefinition.java
index 2b80f5b71f2..c1e29d9e542 100644
--- a/src/org/opencms/xml/CmsXmlContentDefinition.java
+++ b/src/org/opencms/xml/CmsXmlContentDefinition.java
@@ -281,7 +281,7 @@ public static CmsXmlContentDefinition getContentDefinitionForResource(CmsObject
                 if (!LOG.isDebugEnabled()) {
                     LOG.warn(e.getLocalizedMessage(), e);
                 }
-                LOG.debug(e.getLocalizedMessage(), e);
+                LOG.debug("Unexpected error: mobb-08d0089c0cb7e7356aaf106a8dba059f", e);
             }
         }
         if (contentDef == null) {