diff --git a/hawkbit-rest/hawkbit-mgmt-api/src/main/java/org/eclipse/hawkbit/mgmt/json/model/MgmtBaseEntity.java b/hawkbit-rest/hawkbit-mgmt-api/src/main/java/org/eclipse/hawkbit/mgmt/json/model/MgmtBaseEntity.java
index 4b1e75cb1..479e75acd 100644
--- a/hawkbit-rest/hawkbit-mgmt-api/src/main/java/org/eclipse/hawkbit/mgmt/json/model/MgmtBaseEntity.java
+++ b/hawkbit-rest/hawkbit-mgmt-api/src/main/java/org/eclipse/hawkbit/mgmt/json/model/MgmtBaseEntity.java
@@ -47,6 +47,7 @@ public abstract class MgmtBaseEntity extends RepresentationModel<MgmtBaseEntity>
     @JsonProperty
     @Schema(description = "Entity was last modified at (timestamp UTC in milliseconds)",
             accessMode = Schema.AccessMode.READ_ONLY, example = "1691065906407")
+    @EqualsAndHashCode.Exclude
     private Long lastModifiedAt;
 
     /**
diff --git a/hawkbit-rest/hawkbit-mgmt-api/src/main/java/org/eclipse/hawkbit/mgmt/json/model/system/MgmtSystemTenantConfigurationValue.java b/hawkbit-rest/hawkbit-mgmt-api/src/main/java/org/eclipse/hawkbit/mgmt/json/model/system/MgmtSystemTenantConfigurationValue.java
index e57111c62..47dc1d2bc 100644
--- a/hawkbit-rest/hawkbit-mgmt-api/src/main/java/org/eclipse/hawkbit/mgmt/json/model/system/MgmtSystemTenantConfigurationValue.java
+++ b/hawkbit-rest/hawkbit-mgmt-api/src/main/java/org/eclipse/hawkbit/mgmt/json/model/system/MgmtSystemTenantConfigurationValue.java
@@ -78,6 +78,7 @@ public class MgmtSystemTenantConfigurationValue extends RepresentationModel<Mgmt
     private boolean global = true;
 
     @Schema(description = "Entity was last modified at (timestamp UTC in milliseconds)", example = "1623085150")
+    @EqualsAndHashCode.Exclude
     private Long lastModifiedAt;
 
     @Schema(description = "Entity was last modified by (User, AMQP-Controller, anonymous etc.)",