diff --git a/CHANGES_NEXT_RELEASE b/CHANGES_NEXT_RELEASE
index f85bfe8d8f..d0952e49b8 100644
--- a/CHANGES_NEXT_RELEASE
+++ b/CHANGES_NEXT_RELEASE
@@ -1,2 +1,3 @@
 - Add: servicePath field to builtin attributes (#2877)
 - Fix: logDeprecate not working correctly (`geo:json` wrongly considered as deprecated)
+- Fix: improve error traces (#4387)
diff --git a/src/lib/mongoBackend/MongoCommonUpdate.cpp b/src/lib/mongoBackend/MongoCommonUpdate.cpp
index e0b3f2f1d4..e00218931b 100644
--- a/src/lib/mongoBackend/MongoCommonUpdate.cpp
+++ b/src/lib/mongoBackend/MongoCommonUpdate.cpp
@@ -316,7 +316,7 @@ static bool attrValueChanges(const orion::BSONObj& attr, ContextAttribute* caP,
     return caP->valueType != orion::ValueTypeNull;
 
   default:
-    LM_E(("Runtime Error (unknown attribute value type in DB: %d)", getFieldF(attr, ENT_ATTRS_VALUE).type()));
+    LM_E(("Runtime Error (unknown attribute value type in DB: %d on attribute %s)", getFieldF(attr, ENT_ATTRS_VALUE).type(), caP->name.c_str()));
     return false;
   }
 }
@@ -442,7 +442,7 @@ static ChangeType mergeAttrInfo
       break;
 
     default:
-      LM_E(("Runtime Error (unknown attribute value type in DB: %d)", getFieldF(attr, ENT_ATTRS_VALUE).type()));
+      LM_E(("Runtime Error (unknown attribute value type in DB: %d on attribute %s)", getFieldF(attr, ENT_ATTRS_VALUE).type(), caP->name.c_str()));
     }
   }
 
diff --git a/src/lib/ngsi/ContextAttribute.cpp b/src/lib/ngsi/ContextAttribute.cpp
index 9a8f939c90..f2aade9e7b 100644
--- a/src/lib/ngsi/ContextAttribute.cpp
+++ b/src/lib/ngsi/ContextAttribute.cpp
@@ -133,7 +133,7 @@ void ContextAttribute::bsonAppendAttrValue
       break;
 
     default:
-      LM_E(("Runtime Error (unknown attribute type: %d)", valueType));
+      LM_E(("Runtime Error (unknown attribute value type: %d on attribute %s)", valueType, name.c_str()));
   }
 }
 
@@ -217,7 +217,7 @@ bool ContextAttribute::calculateOperator
       return false;
 
     default:
-      LM_E(("Runtime Error (unknown attribute type: %d)", valueType));
+      LM_E(("Runtime Error (unknown attribute value type: %d on attribute %s)", valueType, name.c_str()));
       return false;
     }
 
@@ -247,7 +247,7 @@ bool ContextAttribute::calculateOperator
       return false;
 
     default:
-      LM_E(("Runtime Error (unknown attribute type: %d)", valueType));
+      LM_E(("Runtime Error (unknown attribute value type: %d on attribute %s)", valueType, name.c_str()));
       return false;
     }
   }
@@ -258,7 +258,7 @@ bool ContextAttribute::calculateOperator
   }
   else
   {
-    LM_E(("Runtime Error (uknown operator: %s)", op.c_str()));
+    LM_E(("Runtime Error (unknown operator: %s)", op.c_str()));
     return false;
   }
 
diff --git a/src/lib/ngsi/ContextAttributeVector.cpp b/src/lib/ngsi/ContextAttributeVector.cpp
index 234df01262..812f8c9af8 100644
--- a/src/lib/ngsi/ContextAttributeVector.cpp
+++ b/src/lib/ngsi/ContextAttributeVector.cpp
@@ -389,7 +389,7 @@ void ContextAttributeVector::fill
         break;
 
       default:
-        LM_E(("Runtime Error (unknown attribute value type in DB: %d)", getFieldF(attr, ENT_ATTRS_VALUE).type()));
+        LM_E(("Runtime Error (unknown attribute value type in DB: %d on attribute %s)", getFieldF(attr, ENT_ATTRS_VALUE).type(), ca.name.c_str()));
       }
     }
 
@@ -669,7 +669,7 @@ void ContextAttributeVector::applyUpdateOperators(void)
             break;
 
           default:
-            LM_E(("Runtime Error (unknown attribute type: %d)", upOp->valueType));
+            LM_E(("Runtime Error (unknown attribute value type: %d on attribute %s)", upOp->valueType, vec[ix]->name.c_str()));
           }
 
           // Replace old compound value (with $push) with the new one ([])
@@ -705,7 +705,7 @@ void ContextAttributeVector::applyUpdateOperators(void)
             break;
 
           default:
-            LM_E(("Runtime Error (unknown attribute type: %d)", upOp->valueType));
+            LM_E(("Runtime Error (unknown attribute value type: %d on attribute %s)", upOp->valueType, vec[ix]->name.c_str()));
           }
 
           // Replace old compound value (with $push) with the new one ([])
@@ -726,7 +726,7 @@ void ContextAttributeVector::applyUpdateOperators(void)
         }
         else
         {
-          LM_E(("Runtime Error (uknown operator: %s", op.c_str()));
+          LM_E(("Runtime Error (unknown operator: %s", op.c_str()));
         }
       }
     }