diff --git a/src/main/java/org/gridsuite/modification/server/dto/byfilter/equipmentfield/BatteryField.java b/src/main/java/org/gridsuite/modification/server/dto/byfilter/equipmentfield/BatteryField.java
index 117db9718..e8f5d93c0 100644
--- a/src/main/java/org/gridsuite/modification/server/dto/byfilter/equipmentfield/BatteryField.java
+++ b/src/main/java/org/gridsuite/modification/server/dto/byfilter/equipmentfield/BatteryField.java
@@ -64,7 +64,8 @@ public static void setNewValue(Battery battery, String batteryField, @NotNull St
                 ActivePowerControlAdder<Battery> activePowerControlAdder = battery.newExtension(ActivePowerControlAdder.class);
                 ModificationUtils.getInstance().modifyActivePowerControlAttributes(
                         activePowerControl, activePowerControlAdder, null,
-                        new AttributeModification<>(Float.parseFloat(newValue), OperationType.SET), null, null);
+                        new AttributeModification<>(Float.parseFloat(newValue), OperationType.SET), null,
+                    null, MODIFY_BATTERY_ERROR, "Battery '" + battery.getId() + "' : ");
             }
         }
     }
diff --git a/src/main/java/org/gridsuite/modification/server/dto/byfilter/equipmentfield/GeneratorField.java b/src/main/java/org/gridsuite/modification/server/dto/byfilter/equipmentfield/GeneratorField.java
index 028c313f4..755e7d571 100644
--- a/src/main/java/org/gridsuite/modification/server/dto/byfilter/equipmentfield/GeneratorField.java
+++ b/src/main/java/org/gridsuite/modification/server/dto/byfilter/equipmentfield/GeneratorField.java
@@ -98,7 +98,8 @@ public static void setNewValue(Generator generator, String generatorField, @NotN
                 ActivePowerControl<Generator> activePowerControl = generator.getExtension(ActivePowerControl.class);
                 ActivePowerControlAdder<Generator> activePowerControlAdder = generator.newExtension(ActivePowerControlAdder.class);
                 ModificationUtils.getInstance().modifyActivePowerControlAttributes(activePowerControl, activePowerControlAdder, null,
-                        new AttributeModification<>(Float.parseFloat(newValue), OperationType.SET), null, null);
+                        new AttributeModification<>(Float.parseFloat(newValue), OperationType.SET), null, null,
+                    MODIFY_GENERATOR_ERROR, "Generator '" + generator.getId() + "' : ");
             }
             case TRANSIENT_REACTANCE -> modifyGeneratorShortCircuitAttributes(
                     new AttributeModification<>(Double.parseDouble(newValue), OperationType.SET),
diff --git a/src/main/java/org/gridsuite/modification/server/modifications/BatteryCreation.java b/src/main/java/org/gridsuite/modification/server/modifications/BatteryCreation.java
index 10345a8e2..e7a7d6ea8 100644
--- a/src/main/java/org/gridsuite/modification/server/modifications/BatteryCreation.java
+++ b/src/main/java/org/gridsuite/modification/server/modifications/BatteryCreation.java
@@ -18,6 +18,7 @@
 import java.util.List;
 
 import static org.gridsuite.modification.server.NetworkModificationException.Type.BATTERY_ALREADY_EXISTS;
+import static org.gridsuite.modification.server.NetworkModificationException.Type.CREATE_BATTERY_ERROR;
 import static org.gridsuite.modification.server.modifications.ModificationUtils.*;
 
 /**
@@ -38,6 +39,7 @@ public void check(Network network) throws NetworkModificationException {
         if (network.getBattery(modificationInfos.getEquipmentId()) != null) {
             throw new NetworkModificationException(BATTERY_ALREADY_EXISTS, modificationInfos.getEquipmentId());
         }
+        String errorMessage = "Battery '" + modificationInfos.getEquipmentId() + "' : ";
 
         // check connectivity
         ModificationUtils.getInstance()
@@ -49,6 +51,8 @@ public void check(Network network) throws NetworkModificationException {
                 modificationInfos.getErrorType(),
                 modificationInfos.getEquipmentId(),
                 "Battery");
+
+        ModificationUtils.getInstance().checkActivePowerControl(modificationInfos.getParticipate(), modificationInfos.getDroop(), CREATE_BATTERY_ERROR, errorMessage);
     }
 
     @Override
diff --git a/src/main/java/org/gridsuite/modification/server/modifications/BatteryModification.java b/src/main/java/org/gridsuite/modification/server/modifications/BatteryModification.java
index 15d9bd3ad..b4758ff66 100644
--- a/src/main/java/org/gridsuite/modification/server/modifications/BatteryModification.java
+++ b/src/main/java/org/gridsuite/modification/server/modifications/BatteryModification.java
@@ -25,6 +25,7 @@
 import java.util.Collection;
 import java.util.List;
 
+import static org.gridsuite.modification.server.NetworkModificationException.Type.CREATE_BATTERY_ERROR;
 import static org.gridsuite.modification.server.NetworkModificationException.Type.MODIFY_BATTERY_ERROR;
 import static org.gridsuite.modification.server.modifications.ModificationUtils.insertReportNode;
 
@@ -171,7 +172,8 @@ public static ReportNode modifyBatteryActivePowerControlAttributes(AttributeModi
                                                                        ReportNode subReportNodeSetpoints) {
         ActivePowerControl<Battery> activePowerControl = battery.getExtension(ActivePowerControl.class);
         ActivePowerControlAdder<Battery> activePowerControlAdder = battery.newExtension(ActivePowerControlAdder.class);
-        return ModificationUtils.getInstance().modifyActivePowerControlAttributes(activePowerControl, activePowerControlAdder, participate, droop, subReportNode, subReportNodeSetpoints);
+        return ModificationUtils.getInstance().modifyActivePowerControlAttributes(activePowerControl, activePowerControlAdder,
+            participate, droop, subReportNode, subReportNodeSetpoints, CREATE_BATTERY_ERROR, "Battery '" + battery.getId() + "' : ");
     }
 
     private ReportNode modifyBatteryConnectivityAttributes(BatteryModificationInfos modificationInfos,
diff --git a/src/main/java/org/gridsuite/modification/server/modifications/GeneratorCreation.java b/src/main/java/org/gridsuite/modification/server/modifications/GeneratorCreation.java
index 8931f4a3d..3baaa915b 100644
--- a/src/main/java/org/gridsuite/modification/server/modifications/GeneratorCreation.java
+++ b/src/main/java/org/gridsuite/modification/server/modifications/GeneratorCreation.java
@@ -20,7 +20,7 @@
 import java.util.ArrayList;
 import java.util.List;
 
-import static org.gridsuite.modification.server.NetworkModificationException.Type.GENERATOR_ALREADY_EXISTS;
+import static org.gridsuite.modification.server.NetworkModificationException.Type.*;
 import static org.gridsuite.modification.server.modifications.ModificationUtils.*;
 
 /**
@@ -41,6 +41,7 @@ public void check(Network network) throws NetworkModificationException {
         if (network.getGenerator(modificationInfos.getEquipmentId()) != null) {
             throw new NetworkModificationException(GENERATOR_ALREADY_EXISTS, modificationInfos.getEquipmentId());
         }
+        String errorMessage = "Generator '" + modificationInfos.getEquipmentId() + "' : ";
 
         // check connectivity
         ModificationUtils.getInstance().controlConnectivity(network, modificationInfos.getVoltageLevelId(),
@@ -58,6 +59,9 @@ public void check(Network network) throws NetworkModificationException {
             modificationInfos.getRegulatingTerminalId(),
             modificationInfos.getRegulatingTerminalType(),
             modificationInfos.getRegulatingTerminalVlId());
+
+        ModificationUtils.getInstance().checkActivePowerControl(modificationInfos.getParticipate(),
+            modificationInfos.getDroop(), CREATE_GENERATOR_ERROR, errorMessage);
     }
 
     @Override
diff --git a/src/main/java/org/gridsuite/modification/server/modifications/GeneratorModification.java b/src/main/java/org/gridsuite/modification/server/modifications/GeneratorModification.java
index 71a4508b9..8160264c8 100644
--- a/src/main/java/org/gridsuite/modification/server/modifications/GeneratorModification.java
+++ b/src/main/java/org/gridsuite/modification/server/modifications/GeneratorModification.java
@@ -56,6 +56,7 @@ public void check(Network network) throws NetworkModificationException {
                     modificationInfos.getRegulatingTerminalVlId().getValue());
         }
         checkActivePowerZeroOrBetweenMinAndMaxActivePowerGenerator(modificationInfos, generator, MODIFY_GENERATOR_ERROR, errorMessage);
+        checkActivePowerRegulation(modificationInfos, generator, MODIFY_GENERATOR_ERROR, errorMessage);
     }
 
     private void checkActivePowerZeroOrBetweenMinAndMaxActivePowerGenerator(GeneratorModificationInfos modificationInfos, Generator generator, NetworkModificationException.Type exceptionType, String errorMessage) {
@@ -71,6 +72,15 @@ private void checkActivePowerZeroOrBetweenMinAndMaxActivePowerGenerator(Generato
         );
     }
 
+    private void checkActivePowerRegulation(GeneratorModificationInfos modificationInfos, Generator generator, NetworkModificationException.Type exceptionType, String errorMessage) {
+//        ModificationUtils.getInstance().checkActivePowerControl(
+//            modificationInfos.getParticipate() != null ? modificationInfos.getParticipate().getValue() : null,
+//            modificationInfos.getDroop() != null ? modificationInfos.getDroop().getValue() : null,
+//            exceptionType,
+//            errorMessage
+//        );
+    }
+
     @Override
     public void apply(Network network, ReportNode subReportNode) {
         Generator generator = ModificationUtils.getInstance().getGenerator(network, modificationInfos.getEquipmentId());
@@ -210,7 +220,9 @@ private ReportNode modifyGeneratorActivePowerControlAttributes(GeneratorModifica
                                                                  Generator generator, ReportNode subReportNode, ReportNode subReportNodeSetpoints) {
         ActivePowerControl<Generator> activePowerControl = generator.getExtension(ActivePowerControl.class);
         ActivePowerControlAdder<Generator> activePowerControlAdder = generator.newExtension(ActivePowerControlAdder.class);
-        return ModificationUtils.getInstance().modifyActivePowerControlAttributes(activePowerControl, activePowerControlAdder, modificationInfos.getParticipate(), modificationInfos.getDroop(), subReportNode, subReportNodeSetpoints);
+        return ModificationUtils.getInstance().modifyActivePowerControlAttributes(activePowerControl, activePowerControlAdder,
+            modificationInfos.getParticipate(), modificationInfos.getDroop(), subReportNode, subReportNodeSetpoints,
+            MODIFY_GENERATOR_ERROR, "Generator '" + modificationInfos.getEquipmentId() + "' : ");
     }
 
     private void modifyGeneratorStartUpAttributes(GeneratorModificationInfos modificationInfos, Generator generator,
diff --git a/src/main/java/org/gridsuite/modification/server/modifications/ModificationUtils.java b/src/main/java/org/gridsuite/modification/server/modifications/ModificationUtils.java
index a2f5a4833..f4af74e8a 100644
--- a/src/main/java/org/gridsuite/modification/server/modifications/ModificationUtils.java
+++ b/src/main/java/org/gridsuite/modification/server/modifications/ModificationUtils.java
@@ -1160,18 +1160,29 @@ private void modifyExistingActivePowerControl(ActivePowerControl<?> activePowerC
     private void createNewActivePowerControl(ActivePowerControlAdder<?> adder,
                                              AttributeModification<Boolean> participateInfo,
                                              AttributeModification<Float> droopInfo,
-                                             List<ReportNode> reports) {
-        boolean participate = participateInfo != null ? participateInfo.getValue() : false;
-        adder.withParticipate(participate);
-        if (participateInfo != null && reports != null) {
-            reports.add(buildModificationReport(null, participate, "Participate"));
+                                             List<ReportNode> reports,
+                                             NetworkModificationException.Type exceptionType,
+                                             String errorMessage) {
+        Boolean participate = participateInfo == null ? null : participateInfo.getValue();
+        Float droop = droopInfo == null ? null : droopInfo.getValue();
+        checkActivePowerControl(participate, droop, exceptionType, errorMessage);
+        if (participate != null && droop != null) {
+            adder.withParticipate(participate);
+            if (reports != null) {
+                reports.add(buildModificationReport(null, participate, "Participate"));
+            }
+            adder.withDroop(droop);
+            if (reports != null) {
+                reports.add(buildModificationReport(Double.NaN, droop, "Droop"));
+            }
+            adder.add();
         }
-        double droop = droopInfo != null ? droopInfo.getValue() : Double.NaN;
-        adder.withDroop(droop);
-        if (droopInfo != null && reports != null) {
-            reports.add(buildModificationReport(Double.NaN, droop, "Droop"));
+    }
+
+    public void checkActivePowerControl(Boolean participate, Float droop, NetworkModificationException.Type exceptionType, String errorMessage) {
+        if (Boolean.TRUE.equals(participate) && droop == null) {
+            throw new NetworkModificationException(exceptionType, errorMessage + "for creation if participate is true, droop can not be null");
         }
-        adder.add();
     }
 
     public ReportNode modifyActivePowerControlAttributes(ActivePowerControl<?> activePowerControl,
@@ -1179,12 +1190,14 @@ public ReportNode modifyActivePowerControlAttributes(ActivePowerControl<?> activ
                                                          AttributeModification<Boolean> participateInfo,
                                                          AttributeModification<Float> droopInfo,
                                                          ReportNode subReportNode,
-                                                         ReportNode subReporterSetpoints) {
+                                                         ReportNode subReporterSetpoints,
+                                                         NetworkModificationException.Type exceptionType,
+                                                         String errorMessage) {
         List<ReportNode> reports = new ArrayList<>();
         if (activePowerControl != null) {
             modifyExistingActivePowerControl(activePowerControl, participateInfo, droopInfo, reports);
         } else {
-            createNewActivePowerControl(activePowerControlAdder, participateInfo, droopInfo, reports);
+            createNewActivePowerControl(activePowerControlAdder, participateInfo, droopInfo, reports, exceptionType, errorMessage);
         }
         if (subReportNode != null) {
             ReportNode subReportNodeSetpoints2 = subReporterSetpoints;