In EO, it is not supported to have an application with and without binding at the same time, so it is prohibited in the XMIR too.
Incorrect:
<o base="man">
<o base="string" as="name"/>
<o base="number"/>
</o>Correct:
<o base="man">
<o base="string" as="name"/>
<o base="number" as="age"/>
</o>Or
<o base="man">
<o base="string"/>
<o base="number"/>
</o>