diff --git a/src/main/java/edu/ie3/datamodel/io/factory/Factory.java b/src/main/java/edu/ie3/datamodel/io/factory/Factory.java
index 9daff0c2d..04b8722c5 100644
--- a/src/main/java/edu/ie3/datamodel/io/factory/Factory.java
+++ b/src/main/java/edu/ie3/datamodel/io/factory/Factory.java
@@ -102,6 +102,15 @@ private void isSupportedClass(Class<?> desiredClass) {
                   .collect(Collectors.joining("\n - ")));
   }
 
+  /**
+   * Returns a list of sets of field names that are required to be unique throughout the whole
+   * dataset. For each set, the combination of all members of the set must be unique. This means
+   * that individual members of the set are not required to be unique, but only their combination.
+   * Sets with only a single member are exempt here; the single field must be unique throughout the
+   * dataset.
+   */
+  public abstract List<Set<String>> getUniqueFields();
+
   /**
    * Returns list of sets of attribute names that the entity requires to be built. At least one of
    * these sets needs to be delivered for entity creation to be successful.
diff --git a/src/main/java/edu/ie3/datamodel/io/factory/UniqueEntityFactory.java b/src/main/java/edu/ie3/datamodel/io/factory/UniqueEntityFactory.java
new file mode 100644
index 000000000..35e1dec0f
--- /dev/null
+++ b/src/main/java/edu/ie3/datamodel/io/factory/UniqueEntityFactory.java
@@ -0,0 +1,34 @@
+/*
+ * © 2024. TU Dortmund University,
+ * Institute of Energy Systems, Energy Efficiency and Energy Economics,
+ * Research group Distribution grid planning and operation
+*/
+package edu.ie3.datamodel.io.factory;
+
+import edu.ie3.datamodel.models.Entity;
+import java.util.List;
+import java.util.Set;
+
+/**
+ * Universal factory class for creating entities with unique fields uuid and id.
+ *
+ * @param <T> Type of entity that this factory can create. Can be a subclass of the entities that
+ *     this factory creates.
+ * @param <D> Type of data class that is required for entity creation
+ */
+public abstract class UniqueEntityFactory<T extends Entity, D extends EntityData>
+    extends EntityFactory<T, D> {
+
+  protected static final String UUID = "uuid";
+
+  protected static final String ID = "id";
+
+  public UniqueEntityFactory(Class<? extends T>... allowedClasses) {
+    super(allowedClasses);
+  }
+
+  @Override
+  public List<Set<String>> getUniqueFields() {
+    return List.of(newSet(UUID), newSet(ID));
+  }
+}
diff --git a/src/main/java/edu/ie3/datamodel/io/factory/input/AssetInputEntityFactory.java b/src/main/java/edu/ie3/datamodel/io/factory/input/AssetInputEntityFactory.java
index bfef41520..a5797cf9b 100644
--- a/src/main/java/edu/ie3/datamodel/io/factory/input/AssetInputEntityFactory.java
+++ b/src/main/java/edu/ie3/datamodel/io/factory/input/AssetInputEntityFactory.java
@@ -5,7 +5,7 @@
 */
 package edu.ie3.datamodel.io.factory.input;
 
-import edu.ie3.datamodel.io.factory.EntityFactory;
+import edu.ie3.datamodel.io.factory.UniqueEntityFactory;
 import edu.ie3.datamodel.models.OperationTime;
 import edu.ie3.datamodel.models.input.AssetInput;
 import edu.ie3.datamodel.models.input.OperatorInput;
@@ -22,12 +22,10 @@
  * @since 19.02.20
  */
 public abstract class AssetInputEntityFactory<T extends AssetInput, D extends AssetInputEntityData>
-    extends EntityFactory<T, D> {
+    extends UniqueEntityFactory<T, D> {
 
-  private static final String UUID = "uuid";
   private static final String OPERATES_FROM = "operatesFrom";
   private static final String OPERATES_UNTIL = "operatesUntil";
-  private static final String ID = "id";
 
   protected AssetInputEntityFactory(Class<? extends T>... allowedClasses) {
     super(allowedClasses);
diff --git a/src/main/java/edu/ie3/datamodel/io/factory/input/OperatorInputFactory.java b/src/main/java/edu/ie3/datamodel/io/factory/input/OperatorInputFactory.java
index 706ba1250..76c01a6cc 100644
--- a/src/main/java/edu/ie3/datamodel/io/factory/input/OperatorInputFactory.java
+++ b/src/main/java/edu/ie3/datamodel/io/factory/input/OperatorInputFactory.java
@@ -6,16 +6,13 @@
 package edu.ie3.datamodel.io.factory.input;
 
 import edu.ie3.datamodel.io.factory.EntityData;
-import edu.ie3.datamodel.io.factory.EntityFactory;
+import edu.ie3.datamodel.io.factory.UniqueEntityFactory;
 import edu.ie3.datamodel.models.input.OperatorInput;
 import java.util.Collections;
 import java.util.List;
 import java.util.Set;
 
-public class OperatorInputFactory extends EntityFactory<OperatorInput, EntityData> {
-
-  private static final String ENTITY_UUID = "uuid";
-  private static final String ENTITY_ID = "id";
+public class OperatorInputFactory extends UniqueEntityFactory<OperatorInput, EntityData> {
 
   public OperatorInputFactory() {
     super(OperatorInput.class);
@@ -23,12 +20,12 @@ public OperatorInputFactory() {
 
   @Override
   protected List<Set<String>> getFields(Class<?> entityClass) {
-    Set<String> constructorParams = newSet(ENTITY_UUID, ENTITY_ID);
+    Set<String> constructorParams = newSet(UUID, ID);
     return Collections.singletonList(constructorParams);
   }
 
   @Override
   protected OperatorInput buildModel(EntityData data) {
-    return new OperatorInput(data.getUUID(ENTITY_UUID), data.getField(ENTITY_ID));
+    return new OperatorInput(data.getUUID(UUID), data.getField(ID));
   }
 }
diff --git a/src/main/java/edu/ie3/datamodel/io/factory/input/graphics/GraphicInputFactory.java b/src/main/java/edu/ie3/datamodel/io/factory/input/graphics/GraphicInputFactory.java
index c3a5a058b..31ad20acf 100644
--- a/src/main/java/edu/ie3/datamodel/io/factory/input/graphics/GraphicInputFactory.java
+++ b/src/main/java/edu/ie3/datamodel/io/factory/input/graphics/GraphicInputFactory.java
@@ -47,6 +47,11 @@ protected List<Set<String>> getFields(Class<?> entityClass) {
     return Collections.singletonList(constructorParamsMin);
   }
 
+  @Override
+  public List<Set<String>> getUniqueFields() {
+    return List.of(newSet(UUID));
+  }
+
   /**
    * Returns fields other than the required fields of {@link GraphicInput} that have to be present.
    *
diff --git a/src/main/java/edu/ie3/datamodel/io/factory/result/ResultEntityFactory.java b/src/main/java/edu/ie3/datamodel/io/factory/result/ResultEntityFactory.java
index 98a1a1cea..76b4b7277 100644
--- a/src/main/java/edu/ie3/datamodel/io/factory/result/ResultEntityFactory.java
+++ b/src/main/java/edu/ie3/datamodel/io/factory/result/ResultEntityFactory.java
@@ -10,7 +10,9 @@
 import edu.ie3.datamodel.models.result.ResultEntity;
 import edu.ie3.util.TimeUtil;
 import java.time.ZoneId;
+import java.util.List;
 import java.util.Locale;
+import java.util.Set;
 
 /**
  * Internal API for building {@link ResultEntity}s. This additional abstraction layer is necessary
@@ -35,4 +37,9 @@ protected ResultEntityFactory(String dtfPattern, Class<? extends T>... allowedCl
     super(allowedClasses);
     timeUtil = new TimeUtil(ZoneId.of("UTC"), Locale.GERMANY, dtfPattern);
   }
+
+  @Override
+  public List<Set<String>> getUniqueFields() {
+    return List.of(newSet(TIME, INPUT_MODEL));
+  }
 }
diff --git a/src/main/java/edu/ie3/datamodel/io/factory/timeseries/IdCoordinateFactory.java b/src/main/java/edu/ie3/datamodel/io/factory/timeseries/IdCoordinateFactory.java
index cca490869..2e603432f 100644
--- a/src/main/java/edu/ie3/datamodel/io/factory/timeseries/IdCoordinateFactory.java
+++ b/src/main/java/edu/ie3/datamodel/io/factory/timeseries/IdCoordinateFactory.java
@@ -7,6 +7,8 @@
 
 import edu.ie3.datamodel.io.factory.Factory;
 import edu.ie3.datamodel.io.factory.SimpleFactoryData;
+import java.util.List;
+import java.util.Set;
 import org.apache.commons.lang3.tuple.Pair;
 import org.locationtech.jts.geom.Point;
 
@@ -28,4 +30,9 @@ protected IdCoordinateFactory() {
 
   /** @return the field id for the coordinate longitude */
   public abstract String getLonField();
+
+  @Override
+  public List<Set<String>> getUniqueFields() {
+    return List.of(newSet(getIdField()));
+  }
 }
diff --git a/src/main/java/edu/ie3/datamodel/io/factory/timeseries/TimeBasedSimpleValueFactory.java b/src/main/java/edu/ie3/datamodel/io/factory/timeseries/TimeBasedSimpleValueFactory.java
index d290ea04e..33a2cff0e 100644
--- a/src/main/java/edu/ie3/datamodel/io/factory/timeseries/TimeBasedSimpleValueFactory.java
+++ b/src/main/java/edu/ie3/datamodel/io/factory/timeseries/TimeBasedSimpleValueFactory.java
@@ -18,7 +18,6 @@
 
 public class TimeBasedSimpleValueFactory<V extends Value>
     extends TimeBasedValueFactory<SimpleTimeBasedValueData<V>, V> {
-  private static final String UUID = "uuid";
   private static final String TIME = "time";
   /* Energy price */
   private static final String PRICE = "price";
diff --git a/src/main/java/edu/ie3/datamodel/io/factory/timeseries/TimeBasedValueFactory.java b/src/main/java/edu/ie3/datamodel/io/factory/timeseries/TimeBasedValueFactory.java
index 8acebdf05..ad0d8b08d 100644
--- a/src/main/java/edu/ie3/datamodel/io/factory/timeseries/TimeBasedValueFactory.java
+++ b/src/main/java/edu/ie3/datamodel/io/factory/timeseries/TimeBasedValueFactory.java
@@ -8,6 +8,8 @@
 import edu.ie3.datamodel.io.factory.Factory;
 import edu.ie3.datamodel.models.timeseries.individual.TimeBasedValue;
 import edu.ie3.datamodel.models.value.Value;
+import java.util.List;
+import java.util.Set;
 
 /**
  * Abstract class that is able to build {@link TimeBasedValue}s from "flat" information
@@ -17,7 +19,15 @@
  */
 public abstract class TimeBasedValueFactory<D extends TimeBasedValueData<V>, V extends Value>
     extends Factory<V, D, TimeBasedValue<V>> {
+
+  protected static final String UUID = "uuid";
+
   protected TimeBasedValueFactory(Class<? extends V>... valueClasses) {
     super(valueClasses);
   }
+
+  @Override
+  public List<Set<String>> getUniqueFields() {
+    return List.of(newSet(UUID));
+  }
 }
diff --git a/src/main/java/edu/ie3/datamodel/io/factory/timeseries/TimeBasedWeatherValueFactory.java b/src/main/java/edu/ie3/datamodel/io/factory/timeseries/TimeBasedWeatherValueFactory.java
index 254de4a74..e6a4c53d5 100644
--- a/src/main/java/edu/ie3/datamodel/io/factory/timeseries/TimeBasedWeatherValueFactory.java
+++ b/src/main/java/edu/ie3/datamodel/io/factory/timeseries/TimeBasedWeatherValueFactory.java
@@ -16,7 +16,6 @@
  */
 public abstract class TimeBasedWeatherValueFactory
     extends TimeBasedValueFactory<TimeBasedWeatherValueData, WeatherValue> {
-  protected static final String UUID = "uuid";
   protected static final String TIME = "time";
   protected static final String COORDINATE_ID = "coordinateId";
 
diff --git a/src/main/java/edu/ie3/datamodel/io/factory/timeseries/TimeSeriesMappingFactory.java b/src/main/java/edu/ie3/datamodel/io/factory/timeseries/TimeSeriesMappingFactory.java
index 14d069c8a..065301ce8 100644
--- a/src/main/java/edu/ie3/datamodel/io/factory/timeseries/TimeSeriesMappingFactory.java
+++ b/src/main/java/edu/ie3/datamodel/io/factory/timeseries/TimeSeriesMappingFactory.java
@@ -38,4 +38,9 @@ protected TimeSeriesMappingSource.MappingEntry buildModel(EntityData data) {
     UUID timeSeries = data.getUUID(TIME_SERIES);
     return new TimeSeriesMappingSource.MappingEntry(uuid, participant, timeSeries);
   }
+
+  @Override
+  public List<Set<String>> getUniqueFields() {
+    return List.of(newSet(UUID));
+  }
 }
diff --git a/src/main/java/edu/ie3/datamodel/io/factory/timeseries/TimeSeriesMetaInformationFactory.java b/src/main/java/edu/ie3/datamodel/io/factory/timeseries/TimeSeriesMetaInformationFactory.java
index 327f920eb..4f7576e6b 100644
--- a/src/main/java/edu/ie3/datamodel/io/factory/timeseries/TimeSeriesMetaInformationFactory.java
+++ b/src/main/java/edu/ie3/datamodel/io/factory/timeseries/TimeSeriesMetaInformationFactory.java
@@ -41,4 +41,9 @@ protected IndividualTimeSeriesMetaInformation buildModel(EntityData data) {
     ColumnScheme columnScheme = ColumnScheme.parse(data.getField(COLUMN_SCHEME)).orElseThrow();
     return new IndividualTimeSeriesMetaInformation(timeSeries, columnScheme);
   }
+
+  @Override
+  public List<Set<String>> getUniqueFields() {
+    return List.of(newSet(TIME_SERIES));
+  }
 }
diff --git a/src/main/java/edu/ie3/datamodel/io/factory/typeinput/AssetTypeInputEntityFactory.java b/src/main/java/edu/ie3/datamodel/io/factory/typeinput/AssetTypeInputEntityFactory.java
index a318f7621..4aae38c09 100644
--- a/src/main/java/edu/ie3/datamodel/io/factory/typeinput/AssetTypeInputEntityFactory.java
+++ b/src/main/java/edu/ie3/datamodel/io/factory/typeinput/AssetTypeInputEntityFactory.java
@@ -6,7 +6,7 @@
 package edu.ie3.datamodel.io.factory.typeinput;
 
 import edu.ie3.datamodel.io.factory.EntityData;
-import edu.ie3.datamodel.io.factory.EntityFactory;
+import edu.ie3.datamodel.io.factory.UniqueEntityFactory;
 import edu.ie3.datamodel.models.input.AssetTypeInput;
 
 /**
@@ -18,10 +18,7 @@
  * @since 11.02.20
  */
 abstract class AssetTypeInputEntityFactory<T extends AssetTypeInput>
-    extends EntityFactory<T, EntityData> {
-
-  protected static final String ENTITY_UUID = "uuid";
-  protected static final String ENTITY_ID = "id";
+    extends UniqueEntityFactory<T, EntityData> {
 
   protected AssetTypeInputEntityFactory(Class<? extends T>... allowedClasses) {
     super(allowedClasses);
diff --git a/src/main/java/edu/ie3/datamodel/io/factory/typeinput/LineTypeInputFactory.java b/src/main/java/edu/ie3/datamodel/io/factory/typeinput/LineTypeInputFactory.java
index 504d0f09c..244a61839 100644
--- a/src/main/java/edu/ie3/datamodel/io/factory/typeinput/LineTypeInputFactory.java
+++ b/src/main/java/edu/ie3/datamodel/io/factory/typeinput/LineTypeInputFactory.java
@@ -32,15 +32,15 @@ public LineTypeInputFactory() {
 
   @Override
   protected List<Set<String>> getFields(Class<?> entityClass) {
-    Set<String> constructorParams = newSet(ENTITY_UUID, ENTITY_ID, B, G, R, X, I_MAX, V_RATED);
+    Set<String> constructorParams = newSet(UUID, ID, B, G, R, X, I_MAX, V_RATED);
 
     return Collections.singletonList(constructorParams);
   }
 
   @Override
   protected LineTypeInput buildModel(EntityData data) {
-    UUID uuid = data.getUUID(ENTITY_UUID);
-    String id = data.getField(ENTITY_ID);
+    UUID uuid = data.getUUID(UUID);
+    String id = data.getField(ID);
     ComparableQuantity<SpecificConductance> b =
         data.getQuantity(B, StandardUnits.SUSCEPTANCE_PER_LENGTH);
     ComparableQuantity<SpecificConductance> g =
diff --git a/src/main/java/edu/ie3/datamodel/io/factory/typeinput/SystemParticipantTypeInputFactory.java b/src/main/java/edu/ie3/datamodel/io/factory/typeinput/SystemParticipantTypeInputFactory.java
index 014d7c69b..166cd93f8 100644
--- a/src/main/java/edu/ie3/datamodel/io/factory/typeinput/SystemParticipantTypeInputFactory.java
+++ b/src/main/java/edu/ie3/datamodel/io/factory/typeinput/SystemParticipantTypeInputFactory.java
@@ -72,8 +72,7 @@ public SystemParticipantTypeInputFactory() {
 
   @Override
   protected List<Set<String>> getFields(Class<?> entityClass) {
-    Set<String> standardConstructorParams =
-        newSet(ENTITY_UUID, ENTITY_ID, CAP_EX, OP_EX, S_RATED, COS_PHI_RATED);
+    Set<String> standardConstructorParams = newSet(UUID, ID, CAP_EX, OP_EX, S_RATED, COS_PHI_RATED);
 
     Set<String> constructorParameters = null;
     if (entityClass.equals(EvTypeInput.class)) {
@@ -106,8 +105,8 @@ protected List<Set<String>> getFields(Class<?> entityClass) {
 
   @Override
   protected SystemParticipantTypeInput buildModel(EntityData data) {
-    UUID uuid = data.getUUID(ENTITY_UUID);
-    String id = data.getField(ENTITY_ID);
+    UUID uuid = data.getUUID(UUID);
+    String id = data.getField(ID);
     ComparableQuantity<Currency> capEx = data.getQuantity(CAP_EX, StandardUnits.CAPEX);
     ComparableQuantity<EnergyPrice> opEx = data.getQuantity(OP_EX, StandardUnits.ENERGY_PRICE);
     ComparableQuantity<Power> sRated = data.getQuantity(S_RATED, StandardUnits.S_RATED);
diff --git a/src/main/java/edu/ie3/datamodel/io/factory/typeinput/Transformer2WTypeInputFactory.java b/src/main/java/edu/ie3/datamodel/io/factory/typeinput/Transformer2WTypeInputFactory.java
index 8746d24d8..6c3df5c0c 100644
--- a/src/main/java/edu/ie3/datamodel/io/factory/typeinput/Transformer2WTypeInputFactory.java
+++ b/src/main/java/edu/ie3/datamodel/io/factory/typeinput/Transformer2WTypeInputFactory.java
@@ -39,29 +39,16 @@ public Transformer2WTypeInputFactory() {
   protected List<Set<String>> getFields(Class<?> entityClass) {
     Set<String> constructorParams =
         newSet(
-            ENTITY_UUID,
-            ENTITY_ID,
-            R_SC,
-            X_SC,
-            S_RATED,
-            V_RATED_A,
-            V_RATED_B,
-            G_M,
-            B_M,
-            D_V,
-            D_PHI,
-            TAP_SIDE,
-            TAP_NEUTR,
-            TAP_MIN,
-            TAP_MAX);
+            UUID, ID, R_SC, X_SC, S_RATED, V_RATED_A, V_RATED_B, G_M, B_M, D_V, D_PHI, TAP_SIDE,
+            TAP_NEUTR, TAP_MIN, TAP_MAX);
 
     return Collections.singletonList(constructorParams);
   }
 
   @Override
   protected Transformer2WTypeInput buildModel(EntityData data) {
-    UUID uuid = data.getUUID(ENTITY_UUID);
-    String id = data.getField(ENTITY_ID);
+    UUID uuid = data.getUUID(UUID);
+    String id = data.getField(ID);
     ComparableQuantity<ElectricResistance> rSc = data.getQuantity(R_SC, StandardUnits.RESISTANCE);
     ComparableQuantity<ElectricResistance> xSc = data.getQuantity(X_SC, StandardUnits.REACTANCE);
     ComparableQuantity<Power> sRated = data.getQuantity(S_RATED, StandardUnits.S_RATED);
diff --git a/src/main/java/edu/ie3/datamodel/io/factory/typeinput/Transformer3WTypeInputFactory.java b/src/main/java/edu/ie3/datamodel/io/factory/typeinput/Transformer3WTypeInputFactory.java
index 5b45e0394..196eaf472 100644
--- a/src/main/java/edu/ie3/datamodel/io/factory/typeinput/Transformer3WTypeInputFactory.java
+++ b/src/main/java/edu/ie3/datamodel/io/factory/typeinput/Transformer3WTypeInputFactory.java
@@ -45,26 +45,8 @@ public Transformer3WTypeInputFactory() {
   protected List<Set<String>> getFields(Class<?> entityClass) {
     Set<String> constructorParams =
         newSet(
-            ENTITY_UUID,
-            ENTITY_ID,
-            S_RATED_A,
-            S_RATED_B,
-            S_RATED_C,
-            V_RATED_A,
-            V_RATED_B,
-            V_RATED_C,
-            R_SC_A,
-            R_SC_B,
-            R_SC_C,
-            X_SC_A,
-            X_SC_B,
-            X_SC_C,
-            G_M,
-            B_M,
-            D_V,
-            D_PHI,
-            TAP_NEUTR,
-            TAP_MIN,
+            UUID, ID, S_RATED_A, S_RATED_B, S_RATED_C, V_RATED_A, V_RATED_B, V_RATED_C, R_SC_A,
+            R_SC_B, R_SC_C, X_SC_A, X_SC_B, X_SC_C, G_M, B_M, D_V, D_PHI, TAP_NEUTR, TAP_MIN,
             TAP_MAX);
 
     return Collections.singletonList(constructorParams);
@@ -72,8 +54,8 @@ protected List<Set<String>> getFields(Class<?> entityClass) {
 
   @Override
   protected Transformer3WTypeInput buildModel(EntityData data) {
-    UUID uuid = data.getUUID(ENTITY_UUID);
-    String id = data.getField(ENTITY_ID);
+    UUID uuid = data.getUUID(UUID);
+    String id = data.getField(ID);
     ComparableQuantity<Power> sRatedA = data.getQuantity(S_RATED_A, StandardUnits.S_RATED);
     ComparableQuantity<Power> sRatedB = data.getQuantity(S_RATED_B, StandardUnits.S_RATED);
     ComparableQuantity<Power> sRatedC = data.getQuantity(S_RATED_C, StandardUnits.S_RATED);
diff --git a/src/test/groovy/edu/ie3/datamodel/io/factory/FactoryTest.groovy b/src/test/groovy/edu/ie3/datamodel/io/factory/FactoryTest.groovy
index 33f657aed..ccab00d5c 100644
--- a/src/test/groovy/edu/ie3/datamodel/io/factory/FactoryTest.groovy
+++ b/src/test/groovy/edu/ie3/datamodel/io/factory/FactoryTest.groovy
@@ -90,6 +90,11 @@ class FactoryTest extends Specification {
       return null
     }
 
+    @Override
+    List<Set<String>> getUniqueFields() {
+      return null
+    }
+
     @Override
     protected List<Set<String>> getFields(Class<?> entityClass) {
       return [