<?xml version="1.1" encoding="UTF-8" standalone="no"?>
<databaseChangeLog xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
                   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                   xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.5.xsd">
    <changeSet author="R3.Corda" id="make_issuer_ref_nullable">
        <dropNotNullConstraint columnDataType="varbinary(512)" columnName="issuer_ref" tableName="vault_fungible_states"/>
    </changeSet>
</databaseChangeLog>