diff --git a/src/org/opencms/ade/configuration/CmsConfigurationCache.java b/src/org/opencms/ade/configuration/CmsConfigurationCache.java
index b46f7d3fa89..123a0fdf175 100644
--- a/src/org/opencms/ade/configuration/CmsConfigurationCache.java
+++ b/src/org/opencms/ade/configuration/CmsConfigurationCache.java
@@ -710,7 +710,7 @@ protected void update(CmsUUID structureId, String rootPath, int type, CmsResourc
                     m_workQueue.add(config.getStructureId());
                 }
             } catch (Exception e) {
-                LOG.warn(e.getMessage(), e);
+                LOG.warn(e.getMessage(), "Unexpected error: mobb-903fdf6acb6357a621f675c2846761db");
             }
         }
     }
diff --git a/src/org/opencms/gwt/CmsDefaultResourceStatusProvider.java b/src/org/opencms/gwt/CmsDefaultResourceStatusProvider.java
index c81384ab6aa..2bae67910f2 100644
--- a/src/org/opencms/gwt/CmsDefaultResourceStatusProvider.java
+++ b/src/org/opencms/gwt/CmsDefaultResourceStatusProvider.java
@@ -177,7 +177,7 @@ public static CmsRelationTargetListBean getContainerpageRelationTargets(
                     return result;
                 }
             } catch (CmsException e) {
-                LOG.debug(e.getLocalizedMessage(), e);
+                LOG.debug(e.getLocalizedMessage(), "Unexpected error: mobb-973946c61feaee3dbcefcbb0c4a558b9");
             }
         }
 
diff --git a/src/org/opencms/search/CmsSearchManager.java b/src/org/opencms/search/CmsSearchManager.java
index 65ebe771bb1..88b590b9d68 100644
--- a/src/org/opencms/search/CmsSearchManager.java
+++ b/src/org/opencms/search/CmsSearchManager.java
@@ -1294,7 +1294,7 @@ public List<String> getDocumentTypeKeys(CmsResource resource) {
             resourceType = OpenCms.getResourceManager().getResourceType(resource.getTypeId()).getTypeName();
         } catch (CmsLoaderException e) {
             // ignore, unknown resource type, resource can not be indexed
-            LOG.info(e.getLocalizedMessage(), e);
+            LOG.info("Unexpected error: mobb-2530ca0305d8b422675aa9d3bb41cb55", e);
         }
         return getDocumentTypeKeys(resourceType, mimeType);
     }
diff --git a/src/org/opencms/ui/components/fileselect/CmsResourceTreeContainer.java b/src/org/opencms/ui/components/fileselect/CmsResourceTreeContainer.java
index 90e6fd4622b..bd65546a0c9 100644
--- a/src/org/opencms/ui/components/fileselect/CmsResourceTreeContainer.java
+++ b/src/org/opencms/ui/components/fileselect/CmsResourceTreeContainer.java
@@ -319,7 +319,7 @@ protected void fillProperties(CmsObject cms, Item resourceItem, CmsResource reso
             }
 
         } catch (CmsException e) {
-            LOG.error(e.getLocalizedMessage(), e);
+            LOG.error("Unexpected error: mobb-428002995089f587c960a362960d2548", e);
         }
 
     }
diff --git a/src/org/opencms/xml/types/CmsXmlVfsFileValue.java b/src/org/opencms/xml/types/CmsXmlVfsFileValue.java
index 96d97dc87c2..dd8fe1e6139 100644
--- a/src/org/opencms/xml/types/CmsXmlVfsFileValue.java
+++ b/src/org/opencms/xml/types/CmsXmlVfsFileValue.java
@@ -364,7 +364,7 @@ public Object toJson(CmsObject cms) {
         } catch (JSONException e) {
             return null;
         } catch (CmsException e) {
-            LOG.error(e.getLocalizedMessage(), e);
+            LOG.error("Unexpected error: mobb-8c485063f9c620e61a5e5d7f4bc07d70", e);
             return null;
         }
     }