diff --git a/database-connector/src/main/java/life/qbic/projectmanagement/experiment/persistence/SampleStatisticEntry.java b/database-connector/src/main/java/life/qbic/projectmanagement/experiment/persistence/SampleStatisticEntry.java
index e2e4ab7f5..0749ea1c2 100644
--- a/database-connector/src/main/java/life/qbic/projectmanagement/experiment/persistence/SampleStatisticEntry.java
+++ b/database-connector/src/main/java/life/qbic/projectmanagement/experiment/persistence/SampleStatisticEntry.java
@@ -5,7 +5,6 @@
 import jakarta.persistence.Embedded;
 import jakarta.persistence.Entity;
 import jakarta.persistence.GeneratedValue;
-import jakarta.persistence.GenerationType;
 import jakarta.persistence.Id;
 import jakarta.persistence.Table;
 import java.util.Objects;
@@ -28,7 +27,7 @@
 public class SampleStatisticEntry {
 
   @Id
-  @GeneratedValue(strategy = GenerationType.IDENTITY)
+  @GeneratedValue
   private long id;
   @Embedded
   @AttributeOverride(name = "value", column = @Column(name = "projectCode"))
diff --git a/projectmanagement/src/main/java/life/qbic/projectmanagement/application/sample/SampleInformationService.java b/projectmanagement/src/main/java/life/qbic/projectmanagement/application/sample/SampleInformationService.java
index a165c22d0..5de5db90c 100644
--- a/projectmanagement/src/main/java/life/qbic/projectmanagement/application/sample/SampleInformationService.java
+++ b/projectmanagement/src/main/java/life/qbic/projectmanagement/application/sample/SampleInformationService.java
@@ -12,7 +12,6 @@
 import life.qbic.projectmanagement.domain.project.repository.SampleRepository;
 import life.qbic.projectmanagement.domain.project.sample.Sample;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.security.access.prepost.PostFilter;
 import org.springframework.stereotype.Service;
 
 /**
@@ -50,7 +49,6 @@ public Result<Collection<Sample>, ResponseCode> retrieveSamplesForExperiment(
    * @return the results in the provided range
    * @since 1.0.0
    */
-  @PostFilter("hasPermission(filterObject.sampleId(),'life.qbic.projectmanagement.domain.project.sample.Sample','READ')")
   public List<SamplePreview> queryPreview(ExperimentId experimentId, int offset, int limit,
       List<SortOrder> sortOrders, String filter) {
     // returned by JPA -> UnmodifiableRandomAccessList
diff --git a/projectmanagement/src/main/java/life/qbic/projectmanagement/domain/project/experiment/ExperimentalGroup.java b/projectmanagement/src/main/java/life/qbic/projectmanagement/domain/project/experiment/ExperimentalGroup.java
index 7ac9ecc0d..fba03ae2f 100644
--- a/projectmanagement/src/main/java/life/qbic/projectmanagement/domain/project/experiment/ExperimentalGroup.java
+++ b/projectmanagement/src/main/java/life/qbic/projectmanagement/domain/project/experiment/ExperimentalGroup.java
@@ -3,7 +3,6 @@
 import jakarta.persistence.CascadeType;
 import jakarta.persistence.Entity;
 import jakarta.persistence.GeneratedValue;
-import jakarta.persistence.GenerationType;
 import jakarta.persistence.Id;
 import jakarta.persistence.JoinColumn;
 import jakarta.persistence.OneToMany;
@@ -29,7 +28,7 @@ public class ExperimentalGroup {
   private List<BiologicalReplicate> biologicalReplicates;
   private Condition condition;
   @Id
-  @GeneratedValue(strategy = GenerationType.IDENTITY)
+  @GeneratedValue
   private Long experimentalGroupId;
   private int sampleSize;
 
diff --git a/projectmanagement/src/main/java/life/qbic/projectmanagement/domain/project/experiment/ExperimentalVariable.java b/projectmanagement/src/main/java/life/qbic/projectmanagement/domain/project/experiment/ExperimentalVariable.java
index c845a5326..733085d82 100644
--- a/projectmanagement/src/main/java/life/qbic/projectmanagement/domain/project/experiment/ExperimentalVariable.java
+++ b/projectmanagement/src/main/java/life/qbic/projectmanagement/domain/project/experiment/ExperimentalVariable.java
@@ -6,7 +6,6 @@
 import jakarta.persistence.Entity;
 import jakarta.persistence.FetchType;
 import jakarta.persistence.GeneratedValue;
-import jakarta.persistence.GenerationType;
 import jakarta.persistence.Id;
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -32,7 +31,7 @@
 public class ExperimentalVariable {
 
   @Id
-  @GeneratedValue(strategy = GenerationType.IDENTITY)
+  @GeneratedValue
   private long variableId;
 
   @Convert(converter = VariableNameAttributeConverter.class)