diff --git a/docs/db/changelog/changesets/powerauth-java-server/1.4.x/20230322-audit.xml b/docs/db/changelog/changesets/powerauth-java-server/1.4.x/20230322-audit.xml
index 25f61bb5f..82d363539 100644
--- a/docs/db/changelog/changesets/powerauth-java-server/1.4.x/20230322-audit.xml
+++ b/docs/db/changelog/changesets/powerauth-java-server/1.4.x/20230322-audit.xml
@@ -21,9 +21,7 @@
             <column name="audit_level" type="varchar(32)">
                 <constraints nullable="false" />
             </column>
-            <column name="audit_type" type="varchar(256)">
-                <constraints nullable="false" />
-            </column>
+            <column name="audit_type" type="varchar(256)"/>
             <column name="timestamp_created" type="timestamp" defaultValueDate="${now}" />
             <column name="message" type="text">
                 <constraints nullable="false" />
diff --git a/docs/db/changelog/changesets/powerauth-java-server/1.4.x/20230322-init-db.xml b/docs/db/changelog/changesets/powerauth-java-server/1.4.x/20230322-init-db.xml
index 602f59929..f6edbd3e6 100644
--- a/docs/db/changelog/changesets/powerauth-java-server/1.4.x/20230322-init-db.xml
+++ b/docs/db/changelog/changesets/powerauth-java-server/1.4.x/20230322-init-db.xml
@@ -380,7 +380,7 @@
                 <constraints nullable="false" />
             </column>
             <column name="activation_id" type="varchar(37)">
-                <constraints nullable="false" foreignKeyName="recovery_code_activation_fk" referencedTableName="pa_activation" referencedColumnNames="activation_id" />
+                <constraints foreignKeyName="recovery_code_activation_fk" referencedTableName="pa_activation" referencedColumnNames="activation_id" />
             </column>
             <column name="status" type="integer">
                 <constraints nullable="false" />
@@ -551,7 +551,7 @@
             <column name="application_id" type="bigint">
                 <constraints primaryKey="true" />
             </column>
-            <column name="operation_id" type="varchar(255)">
+            <column name="operation_id" type="varchar(37)">
                 <constraints primaryKey="true" />
             </column>
         </createTable>