diff --git a/lib/taskana-core/src/main/java/pro/taskana/AttachmentSummary.java b/lib/taskana-core/src/main/java/pro/taskana/AttachmentSummary.java
index 0de9393bf..dd85d802a 100644
--- a/lib/taskana-core/src/main/java/pro/taskana/AttachmentSummary.java
+++ b/lib/taskana-core/src/main/java/pro/taskana/AttachmentSummary.java
@@ -36,6 +36,20 @@ public interface AttachmentSummary {
      */
     Instant getModified();
 
+    /**
+     * Gets the {@link ObjectReference primaryObjectReference} of the attachment.
+     *
+     * @return {@link ObjectReference primaryObjectReference} of the attachment
+     **/
+    ObjectReference getObjectReference();
+
+    /**
+     * Gets the Channel on which the attachment was received.
+     *
+     * @return the channel
+     **/
+    String getChannel();
+
     /**
      * Gets the classificationSummary of the attachment.
      *
diff --git a/lib/taskana-core/src/main/java/pro/taskana/impl/AttachmentImpl.java b/lib/taskana-core/src/main/java/pro/taskana/impl/AttachmentImpl.java
index 72c2bdc17..d3f6d580f 100644
--- a/lib/taskana-core/src/main/java/pro/taskana/impl/AttachmentImpl.java
+++ b/lib/taskana-core/src/main/java/pro/taskana/impl/AttachmentImpl.java
@@ -134,6 +134,8 @@ public class AttachmentImpl implements Attachment {
         summary.setModified(this.modified);
         summary.setReceived(this.received);
         summary.setTaskId(this.taskId);
+        summary.setChannel(this.channel);
+        summary.setObjectReference(this.objectReference);
         return summary;
     }
 
diff --git a/lib/taskana-core/src/main/java/pro/taskana/impl/AttachmentSummaryImpl.java b/lib/taskana-core/src/main/java/pro/taskana/impl/AttachmentSummaryImpl.java
index 8f7d5573b..7de07477e 100644
--- a/lib/taskana-core/src/main/java/pro/taskana/impl/AttachmentSummaryImpl.java
+++ b/lib/taskana-core/src/main/java/pro/taskana/impl/AttachmentSummaryImpl.java
@@ -4,6 +4,7 @@ import java.time.Instant;
 
 import pro.taskana.AttachmentSummary;
 import pro.taskana.ClassificationSummary;
+import pro.taskana.ObjectReference;
 
 /**
  * The most important fields of the Attachment entity.
@@ -15,6 +16,8 @@ public class AttachmentSummaryImpl implements AttachmentSummary {
     private Instant created;
     private Instant modified;
     private ClassificationSummary classificationSummary;
+    private ObjectReference objectReference;
+    private String channel;
     private Instant received;
 
     AttachmentSummaryImpl() {
@@ -86,6 +89,32 @@ public class AttachmentSummaryImpl implements AttachmentSummary {
         this.classificationSummary = classificationSummary;
     }
 
+    /*
+     * (non-Javadoc)
+     * @see pro.taskana.AttachmentSummary#getObjectReference()
+     */
+    @Override
+    public ObjectReference getObjectReference() {
+        return objectReference;
+    }
+
+    public void setObjectReference(ObjectReference objectReference) {
+        this.objectReference = objectReference;
+    }
+
+    /*
+     * (non-Javadoc)
+     * @see pro.taskana.AttachmentSummary#getChannel()
+     */
+    @Override
+    public String getChannel() {
+        return channel;
+    }
+
+    public void setChannel(String channel) {
+        this.channel = channel;
+    }
+
     // auxiliary method to enable MyBatis access to classificationSummary
     public ClassificationSummaryImpl getClassificationSummaryImpl() {
         return (ClassificationSummaryImpl) classificationSummary;
@@ -113,10 +142,12 @@ public class AttachmentSummaryImpl implements AttachmentSummary {
     public int hashCode() {
         final int prime = 31;
         int result = 1;
+        result = prime * result + ((channel == null) ? 0 : channel.hashCode());
         result = prime * result + ((classificationSummary == null) ? 0 : classificationSummary.hashCode());
         result = prime * result + ((created == null) ? 0 : created.hashCode());
         result = prime * result + ((id == null) ? 0 : id.hashCode());
         result = prime * result + ((modified == null) ? 0 : modified.hashCode());
+        result = prime * result + ((objectReference == null) ? 0 : objectReference.hashCode());
         result = prime * result + ((received == null) ? 0 : received.hashCode());
         result = prime * result + ((taskId == null) ? 0 : taskId.hashCode());
         return result;
@@ -176,13 +207,27 @@ public class AttachmentSummaryImpl implements AttachmentSummary {
         } else if (!taskId.equals(other.taskId)) {
             return false;
         }
+        if (objectReference == null) {
+            if (other.objectReference != null) {
+                return false;
+            }
+        } else if (!objectReference.equals(other.objectReference)) {
+            return false;
+        }
+        if (channel == null) {
+            if (other.channel != null) {
+                return false;
+            }
+        } else if (!channel.equals(other.channel)) {
+            return false;
+        }
         return true;
     }
 
     @Override
     public String toString() {
         StringBuilder builder = new StringBuilder();
-        builder.append("AttachmentSummaryImpl [id=");
+        builder.append("AttachmentImpl [id=");
         builder.append(id);
         builder.append(", taskId=");
         builder.append(taskId);
@@ -192,6 +237,10 @@ public class AttachmentSummaryImpl implements AttachmentSummary {
         builder.append(modified);
         builder.append(", classificationSummary=");
         builder.append(classificationSummary);
+        builder.append(", objectReference=");
+        builder.append(objectReference);
+        builder.append(", channel=");
+        builder.append(channel);
         builder.append(", received=");
         builder.append(received);
         builder.append("]");
diff --git a/lib/taskana-core/src/main/java/pro/taskana/impl/TaskServiceImpl.java b/lib/taskana-core/src/main/java/pro/taskana/impl/TaskServiceImpl.java
index 070fd8a7d..15ecd8537 100644
--- a/lib/taskana-core/src/main/java/pro/taskana/impl/TaskServiceImpl.java
+++ b/lib/taskana-core/src/main/java/pro/taskana/impl/TaskServiceImpl.java
@@ -741,7 +741,7 @@ public class TaskServiceImpl implements TaskService {
         Set<String> taskIdSet = taskSummaries.stream().map(TaskSummaryImpl::getTaskId).collect(Collectors.toSet());
         String[] taskIdArray = taskIdSet.toArray(new String[0]);
 
-        LOGGER.debug("augmentTaskSummariesByContainedSummaries() about to query for attachments ");
+        LOGGER.debug("augmentTaskSummariesByContainedSummaries() about to query for attachmentSummaries ");
         List<AttachmentSummaryImpl> attachmentSummaries = attachmentMapper
             .findAttachmentSummariesByTaskIds(taskIdArray);
 
diff --git a/lib/taskana-core/src/main/java/pro/taskana/mappings/AttachmentMapper.java b/lib/taskana-core/src/main/java/pro/taskana/mappings/AttachmentMapper.java
index 50a614617..a27ec0f09 100644
--- a/lib/taskana-core/src/main/java/pro/taskana/mappings/AttachmentMapper.java
+++ b/lib/taskana-core/src/main/java/pro/taskana/mappings/AttachmentMapper.java
@@ -74,7 +74,7 @@ public interface AttachmentMapper {
     })
     AttachmentImpl getAttachment(@Param("attachmentId") String attachmentId);
 
-    @Select("<script>SELECT ID, TASK_ID, CREATED, MODIFIED, CLASSIFICATION_KEY, CLASSIFICATION_ID, RECEIVED "
+    @Select("<script>SELECT ID, TASK_ID, CREATED, MODIFIED, CLASSIFICATION_KEY, CLASSIFICATION_ID, REF_COMPANY, REF_SYSTEM, REF_INSTANCE, REF_TYPE, REF_VALUE, CHANNEL, RECEIVED "
         + "FROM TASKANA.ATTACHMENT "
         + "<where>"
         + "TASK_ID IN (<foreach collection='array' item='item' separator=',' >#{item}</foreach>)"
@@ -88,7 +88,13 @@ public interface AttachmentMapper {
         @Result(property = "modified", column = "MODIFIED"),
         @Result(property = "classificationSummaryImpl.key", column = "CLASSIFICATION_KEY"),
         @Result(property = "classificationSummaryImpl.id", column = "CLASSIFICATION_ID"),
-        @Result(property = "received", column = "RECEIVED"),
+        @Result(property = "objectReference.company", column = "REF_COMPANY"),
+        @Result(property = "objectReference.system", column = "REF_SYSTEM"),
+        @Result(property = "objectReference.systemInstance", column = "REF_INSTANCE"),
+        @Result(property = "objectReference.type", column = "REF_TYPE"),
+        @Result(property = "objectReference.value", column = "REF_VALUE"),
+        @Result(property = "channel", column = "CHANNEL"),
+        @Result(property = "received", column = "RECEIVED")
     })
     List<AttachmentSummaryImpl> findAttachmentSummariesByTaskIds(String[] taskIds);
 
diff --git a/lib/taskana-core/src/test/java/acceptance/task/QueryTaskWithAttachment.java b/lib/taskana-core/src/test/java/acceptance/task/QueryTaskWithAttachment.java
new file mode 100644
index 000000000..6feddbab5
--- /dev/null
+++ b/lib/taskana-core/src/test/java/acceptance/task/QueryTaskWithAttachment.java
@@ -0,0 +1,99 @@
+package acceptance.task;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotEquals;
+import static org.junit.Assert.assertNotNull;
+
+import java.util.List;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import acceptance.AbstractAccTest;
+import pro.taskana.Attachment;
+import pro.taskana.AttachmentSummary;
+import pro.taskana.Task;
+import pro.taskana.TaskService;
+import pro.taskana.TaskSummary;
+import pro.taskana.exceptions.InvalidArgumentException;
+import pro.taskana.exceptions.NotAuthorizedException;
+import pro.taskana.exceptions.TaskNotFoundException;
+import pro.taskana.security.JAASRunner;
+import pro.taskana.security.WithAccessId;
+
+/**
+ * Acceptance test for the usecase of adding/removing an attachment of a task and update the result correctly.
+ */
+@RunWith(JAASRunner.class)
+public class QueryTaskWithAttachment extends AbstractAccTest {
+
+    public QueryTaskWithAttachment() {
+        super();
+    }
+
+    @WithAccessId(
+            userName = "user_1_1",
+            groupNames = {"group_1"})
+    @Test
+    public void testGetAttachmentSummariesFromTask() {
+        TaskService taskService = taskanaEngine.getTaskService();
+        List<TaskSummary> tasks = taskService.createTaskQuery()
+                .classificationKeyIn("L110102")
+                .list();
+        assertEquals(1, tasks.size());
+
+        List<AttachmentSummary> attachmentSummaries = tasks.get(0).getAttachmentSummaries();
+        assertNotNull(attachmentSummaries);
+        assertEquals(2, attachmentSummaries.size());
+    }
+
+    @WithAccessId(
+            userName = "user_1_2")
+    @Test
+    public void testGetNoAttachmentSummaryFromTask() {
+        TaskService taskService = taskanaEngine.getTaskService();
+        List<TaskSummary> tasks = taskService.createTaskQuery()
+                .list();
+        assertEquals(20, tasks.size());
+
+        List<AttachmentSummary> attachmentSummaries = tasks.get(0).getAttachmentSummaries();
+        assertEquals(null, attachmentSummaries);
+    }
+
+    @WithAccessId(
+            userName = "user_1_1",
+            groupNames = {"group_1"})
+    @Test
+    public void testIfAttachmentSummariesAreCorrect()
+            throws InvalidArgumentException, TaskNotFoundException, NotAuthorizedException {
+        TaskService taskService = taskanaEngine.getTaskService();
+        // find Task with ID TKI:00...00
+        List<TaskSummary> tasks = taskService.createTaskQuery()
+                .classificationKeyIn("T2000")
+                .customAttributeIn("1", "custom1")
+                .list();
+        assertEquals(1, tasks.size());
+
+        Task originalTask = taskService.getTask("TKI:000000000000000000000000000000000000");
+        Attachment originalAttachment = originalTask.getAttachments().get(0);
+
+        // Test if it's the Summary of the Original Attachment
+        AttachmentSummary queryAttachmentSummary = tasks.get(0).getAttachmentSummaries().get(0);
+        assertEquals(originalAttachment.asSummary(), queryAttachmentSummary);
+
+        // Test if the values are correct
+        assertEquals(originalAttachment.getChannel(), queryAttachmentSummary.getChannel());
+        assertEquals(originalAttachment.getClassificationSummary(), queryAttachmentSummary.getClassificationSummary());
+        assertEquals(originalAttachment.getCreated(), queryAttachmentSummary.getCreated());
+        assertEquals(originalAttachment.getId(), queryAttachmentSummary.getId());
+        assertEquals(originalAttachment.getModified(), queryAttachmentSummary.getModified());
+        assertEquals(originalAttachment.getObjectReference(), queryAttachmentSummary.getObjectReference());
+        assertEquals(originalAttachment.getReceived(), queryAttachmentSummary.getReceived());
+        assertEquals(originalAttachment.getTaskId(), queryAttachmentSummary.getTaskId());
+
+        // Verify that they're not the same Object
+        assertNotEquals(originalAttachment.hashCode(), queryAttachmentSummary.hashCode());
+        assertNotEquals(originalAttachment.getClass(), queryAttachmentSummary.getClass());
+    }
+
+}
diff --git a/lib/taskana-core/src/test/java/pro/taskana/impl/TaskAttachmentTest.java b/lib/taskana-core/src/test/java/pro/taskana/impl/TaskAttachmentTest.java
index cbe41f013..ca4f1af01 100644
--- a/lib/taskana-core/src/test/java/pro/taskana/impl/TaskAttachmentTest.java
+++ b/lib/taskana-core/src/test/java/pro/taskana/impl/TaskAttachmentTest.java
@@ -1,14 +1,22 @@
 package pro.taskana.impl;
 
 import static org.hamcrest.core.IsEqual.equalTo;
+import static org.junit.Assert.assertNotEquals;
 import static org.junit.Assert.assertThat;
 
+import java.time.Instant;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.mockito.InjectMocks;
 import org.mockito.junit.MockitoJUnitRunner;
 
 import pro.taskana.Attachment;
+import pro.taskana.AttachmentSummary;
+import pro.taskana.ObjectReference;
 
 /**
  * Unit Test for methods needed fot attachment at TaskImpl.<br>
@@ -92,6 +100,47 @@ public class TaskAttachmentTest {
         assertThat(actual, equalTo(attachment1));
     }
 
+    @Test
+    public void testGetAttachmentSummaries() {
+        ObjectReference objRef = new ObjectReference();
+        objRef.setId("ObjRefId");
+        objRef.setCompany("company");
+
+        Map<String, String> customAttr = new HashMap<String, String>();
+        customAttr.put("key", "value");
+
+        Attachment attachment1 = createAttachment("ID1", "taskId1");
+        attachment1.setChannel("channel");
+        attachment1.setClassificationSummary(new ClassificationImpl().asSummary());
+        attachment1.setReceived(Instant.now());
+        attachment1.setObjectReference(objRef);
+        //attachment1.setCustomAttributes(customAttr);
+
+        cut.addAttachment(attachment1);
+
+        List<AttachmentSummary> summaries = cut.asSummary().getAttachmentSummaries();
+        AttachmentSummary attachmentSummary = summaries.get(0);
+
+        assertThat(attachmentSummary, equalTo(attachment1.asSummary()));
+
+        assertThat(attachmentSummary.getId(), equalTo(attachment1.getId()));
+        assertThat(attachmentSummary.getTaskId(), equalTo(attachment1.getTaskId()));
+        assertThat(attachmentSummary.getChannel(), equalTo(attachment1.getChannel()));
+        assertThat(attachmentSummary.getClassificationSummary(), equalTo(attachment1.getClassificationSummary()));
+        assertThat(attachmentSummary.getObjectReference(), equalTo(attachment1.getObjectReference()));
+        assertThat(attachmentSummary.getCreated(), equalTo(attachment1.getCreated()));
+        assertThat(attachmentSummary.getReceived(), equalTo(attachment1.getReceived()));
+        assertThat(attachmentSummary.getModified(), equalTo(attachment1.getModified()));
+
+        // Must be different
+        assertNotEquals(attachmentSummary.hashCode(), attachment1.hashCode());
+
+        cut.removeAttachment("ID1");
+        assertThat(summaries.size(), equalTo(1));
+        summaries = cut.asSummary().getAttachmentSummaries();
+        assertThat(summaries.size(), equalTo(0));
+    }
+
     private Attachment createAttachment(String id, String taskId) {
         AttachmentImpl attachment = new AttachmentImpl();
         attachment.setId(id);