I have two datasources in my standalone.xml with same jndi-name and pool-name. But only one of the datasources is enabled.

<datasource jndi-name="java:jboss/jdbc/My2DB" pool-name="Mis2DB" enabled="true">
    <connection-url>jdbc:postgresql://localhost:5432/my_prod_db</connection-url>
    <driver>postgres</driver>
    <transaction-isolation>TRANSACTION_READ_COMMITTED</transaction-isolation>
    <security>
        <user-name>username</user-name>
        <password>password</password>
    </security>
    <validation>
        <check-valid-connection-sql>Select 1</check-valid-connection-sql>
    </validation>
</datasource>

<datasource jndi-name="java:jboss/jdbc/My2DB" pool-name="Mis2DB" enabled="false">
     <connection-url>jdbc:postgresql://localhost:5432/my_test_db</connection-url>
     <driver>postgres</driver>
     <transaction-isolation>TRANSACTION_READ_COMMITTED</transaction-isolation>
     <security>
         <user-name>username</user-name>
         <password>password</password>
     </security>
     <validation>
         <check-valid-connection-sql>Select 1</check-valid-connection-sql>
     </validation>
 </datasource>

Starting wildfly results in this error message:

o.j.a.c.management-operation: WFLYCTL0013: Operation ("add") failed - address: ([
    ("subsystem" => "datasources"),
    ("data-source" => "Mis2DB")
    ]) - failure description: "WFLYCTL0212: Duplicate resource [
    (\"subsystem\" => \"datasources\"),
    (\"data-source\" => \"Mis2DB\")
]"

For test purposes I am using either the prod or the test database.

I am using wildfly-26.1.2.Final.