diff --git a/.jhipster/Registration.json b/.jhipster/Registration.json
index ccb7d33..12f985f 100644
--- a/.jhipster/Registration.json
+++ b/.jhipster/Registration.json
@@ -40,6 +40,13 @@
       "relationshipName": "event",
       "relationshipSide": "right",
       "relationshipType": "many-to-one"
+    },
+    {
+      "otherEntityField": "name",
+      "otherEntityName": "userAccount",
+      "relationshipName": "userAccount",
+      "relationshipSide": "left",
+      "relationshipType": "many-to-one"
     }
   ],
   "searchEngine": "no"
diff --git a/src/main/java/com/sasiedzi/event/domain/Registration.java b/src/main/java/com/sasiedzi/event/domain/Registration.java
index 4466bbf..f3abc3c 100644
--- a/src/main/java/com/sasiedzi/event/domain/Registration.java
+++ b/src/main/java/com/sasiedzi/event/domain/Registration.java
@@ -46,6 +46,10 @@ public class Registration implements Serializable {
     @JsonIgnoreProperties(value = { "registrations", "transactions" }, allowSetters = true)
     private Event event;
 
+    @ManyToOne(fetch = FetchType.EAGER)
+    @JsonIgnoreProperties(value = { "users", "transactionItems" }, allowSetters = true)
+    private UserAccount userAccount;
+
     @OneToMany(fetch = FetchType.LAZY, mappedBy = "registration")
     @JsonIgnoreProperties(value = { "userAccount", "transaction", "event", "registration" }, allowSetters = true)
     private Set<TransactionItem> transactionItems = new HashSet<>();
@@ -143,6 +147,19 @@ public class Registration implements Serializable {
         return this;
     }
 
+    public UserAccount getUserAccount() {
+        return this.userAccount;
+    }
+
+    public void setUserAccount(UserAccount userAccount) {
+        this.userAccount = userAccount;
+    }
+
+    public Registration userAccount(UserAccount userAccount) {
+        this.setUserAccount(userAccount);
+        return this;
+    }
+
     public Set<TransactionItem> getTransactionItems() {
         return this.transactionItems;
     }
diff --git a/src/main/resources/config/liquibase/changelog/20241118103414_changelog.xml b/src/main/resources/config/liquibase/changelog/20241118103414_changelog.xml
new file mode 100644
index 0000000..75b9c6a
--- /dev/null
+++ b/src/main/resources/config/liquibase/changelog/20241118103414_changelog.xml
@@ -0,0 +1,18 @@
+<?xml version="1.1" encoding="UTF-8" standalone="no"?>
+<databaseChangeLog xmlns="http://www.liquibase.org/xml/ns/dbchangelog" xmlns:ext="http://www.liquibase.org/xml/ns/dbchangelog-ext" xmlns:pro="http://www.liquibase.org/xml/ns/pro" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog-ext http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-ext.xsd http://www.liquibase.org/xml/ns/pro http://www.liquibase.org/xml/ns/pro/liquibase-pro-latest.xsd http://www.liquibase.org/xml/ns/dbchangelog http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-latest.xsd">
+    <changeSet author="Zet (generated)" id="1731926141078-7">
+        <addColumn tableName="registration">
+            <column name="user_account_id" type="bigint">
+              <constraints nullable="true" />
+            </column>
+        </addColumn>
+    </changeSet>
+    <changeSet author="Zet (generated)" id="1731926141078-8">
+        <addForeignKeyConstraint baseColumnNames="user_account_id"
+                                 baseTableName="registration"
+                                 constraintName="fk_registration__user_account_id"
+                                 referencedColumnNames="id"
+                                 referencedTableName="user_account"
+        />
+    </changeSet>
+</databaseChangeLog>
diff --git a/src/main/resources/config/liquibase/master.xml b/src/main/resources/config/liquibase/master.xml
index 0ec10fa..56cc6b4 100644
--- a/src/main/resources/config/liquibase/master.xml
+++ b/src/main/resources/config/liquibase/master.xml
@@ -24,5 +24,6 @@
     <include file="config/liquibase/changelog/20241113135042_added_entity_constraints_UserAccount.xml" relativeToChangelogFile="false"/>
     <include file="config/liquibase/changelog/20241113151058_added_entity_constraints_TransactionItem.xml" relativeToChangelogFile="false"/>
     <!-- jhipster-needle-liquibase-add-constraints-changelog - JHipster will add liquibase constraints changelogs here -->
-    <!-- jhipster-needle-liquibase-add-incremental-changelog - JHipster will add incremental liquibase changelogs here -->
+  <!-- jhipster-needle-liquibase-add-incremental-changelog - JHipster will add incremental liquibase changelogs here -->
+    <include file="config/liquibase/changelog/20241118103414_changelog.xml" relativeToChangelogFile="false"/>
 </databaseChangeLog>
diff --git a/src/test/java/com/sasiedzi/event/domain/RegistrationAsserts.java b/src/test/java/com/sasiedzi/event/domain/RegistrationAsserts.java
index d23f498..b274d17 100644
--- a/src/test/java/com/sasiedzi/event/domain/RegistrationAsserts.java
+++ b/src/test/java/com/sasiedzi/event/domain/RegistrationAsserts.java
@@ -65,6 +65,7 @@ public class RegistrationAsserts {
     public static void assertRegistrationUpdatableRelationshipsEquals(Registration expected, Registration actual) {
         assertThat(expected)
             .as("Verify Registration relationships")
-            .satisfies(e -> assertThat(e.getEvent()).as("check event").isEqualTo(actual.getEvent()));
+            .satisfies(e -> assertThat(e.getEvent()).as("check event").isEqualTo(actual.getEvent()))
+            .satisfies(e -> assertThat(e.getUserAccount()).as("check userAccount").isEqualTo(actual.getUserAccount()));
     }
 }
diff --git a/src/test/java/com/sasiedzi/event/domain/RegistrationTest.java b/src/test/java/com/sasiedzi/event/domain/RegistrationTest.java
index 693bad4..1f91203 100644
--- a/src/test/java/com/sasiedzi/event/domain/RegistrationTest.java
+++ b/src/test/java/com/sasiedzi/event/domain/RegistrationTest.java
@@ -3,6 +3,7 @@ package com.sasiedzi.event.domain;
 import static com.sasiedzi.event.domain.EventTestSamples.*;
 import static com.sasiedzi.event.domain.RegistrationTestSamples.*;
 import static com.sasiedzi.event.domain.TransactionItemTestSamples.*;
+import static com.sasiedzi.event.domain.UserAccountTestSamples.*;
 import static org.assertj.core.api.Assertions.assertThat;
 
 import com.sasiedzi.event.web.rest.TestUtil;
@@ -38,6 +39,18 @@ class RegistrationTest {
         assertThat(registration.getEvent()).isNull();
     }
 
+    @Test
+    void userAccountTest() {
+        Registration registration = getRegistrationRandomSampleGenerator();
+        UserAccount userAccountBack = getUserAccountRandomSampleGenerator();
+
+        registration.setUserAccount(userAccountBack);
+        assertThat(registration.getUserAccount()).isEqualTo(userAccountBack);
+
+        registration.userAccount(null);
+        assertThat(registration.getUserAccount()).isNull();
+    }
+
     @Test
     void transactionItemTest() {
         Registration registration = getRegistrationRandomSampleGenerator();