diff --git a/data-dashboard-backend/src/main/java/org/radarbase/datadashboard/api/domain/mapper/Extensions.kt b/data-dashboard-backend/src/main/java/org/radarbase/datadashboard/api/domain/mapper/Extensions.kt
index 9d99177..4a1a299 100644
--- a/data-dashboard-backend/src/main/java/org/radarbase/datadashboard/api/domain/mapper/Extensions.kt
+++ b/data-dashboard-backend/src/main/java/org/radarbase/datadashboard/api/domain/mapper/Extensions.kt
@@ -23,7 +23,6 @@ import org.radarbase.datadashboard.api.domain.model.Observation
 import java.time.Duration
 
 fun Observation.toDto(): ObservationDto = ObservationDto(
-    id = id,
     project = project,
     subject = subject,
     source = source,
diff --git a/data-dashboard-backend/src/main/java/org/radarbase/datadashboard/api/domain/model/Observation.kt b/data-dashboard-backend/src/main/java/org/radarbase/datadashboard/api/domain/model/Observation.kt
index cba018d..cae8c91 100644
--- a/data-dashboard-backend/src/main/java/org/radarbase/datadashboard/api/domain/model/Observation.kt
+++ b/data-dashboard-backend/src/main/java/org/radarbase/datadashboard/api/domain/model/Observation.kt
@@ -25,11 +25,6 @@ import java.util.*
 @Entity
 @Table(name = "observation")
 data class Observation(
-    @GeneratedValue(strategy = GenerationType.IDENTITY)
-    @Column(updatable = false, nullable = false)
-    @Id
-    val id: Long,
-
     @Column(nullable = false)
     @Id
     val project: String,
diff --git a/data-dashboard-backend/src/main/resources/db/changelog/changes/20220309-create-database.xml b/data-dashboard-backend/src/main/resources/db/changelog/changes/20220309-create-database.xml
index 32c9ad9..dc9154b 100644
--- a/data-dashboard-backend/src/main/resources/db/changelog/changes/20220309-create-database.xml
+++ b/data-dashboard-backend/src/main/resources/db/changelog/changes/20220309-create-database.xml
@@ -25,9 +25,6 @@
 
     <changeSet id="Create observation tables" author="pim" context="dev">
         <createTable tableName="observation">
-            <column name="id" type="bigint" autoIncrement="${autoIncrement}">
-                <constraints primaryKey="true" nullable="false"/>
-            </column>
             <column name="project" type="varchar(255)">
                 <constraints primaryKey="true" nullable="false"/>
             </column>
diff --git a/data-dashboard-backend/src/test/java/org/radarbase/datadashboard/api/resource/ObservationResourceTest.kt b/data-dashboard-backend/src/test/java/org/radarbase/datadashboard/api/resource/ObservationResourceTest.kt
index 20122d9..333fa1d 100644
--- a/data-dashboard-backend/src/test/java/org/radarbase/datadashboard/api/resource/ObservationResourceTest.kt
+++ b/data-dashboard-backend/src/test/java/org/radarbase/datadashboard/api/resource/ObservationResourceTest.kt
@@ -100,7 +100,6 @@ class ObservationResourceTest: JerseyTest() {
 
     private fun createObservation(): Observation {
         return Observation(
-            id = observationId,
             project = "project-1",
             subject = subjectId,
             source = "source-1",
diff --git a/data-dashboard-backend/src/test/java/org/radarbase/datadashboard/api/service/ObservationServiceTest.kt b/data-dashboard-backend/src/test/java/org/radarbase/datadashboard/api/service/ObservationServiceTest.kt
index 3d1b2f0..aab6da5 100644
--- a/data-dashboard-backend/src/test/java/org/radarbase/datadashboard/api/service/ObservationServiceTest.kt
+++ b/data-dashboard-backend/src/test/java/org/radarbase/datadashboard/api/service/ObservationServiceTest.kt
@@ -73,7 +73,6 @@ class ObservationServiceTest {
 
     private fun createObservation(): Observation {
         return Observation(
-            id = observationId,
             project = "project-1",
             subject = subjectId,
             source = "source-1",