auth_method, [odbc,ldap] and mod_vcard_ldap

I have multiple authorization {auth_method, [odbc,ldap]}
Vcard's loaded from LDAP, read-only. But i want to change vcards to odbc-users. I have error 405, when i try to change it:
<error code='405' type='cancel'><not-allowed xmlns='urn:ietf:params:xml:ns:xmpp-stanzas'/></error>
It is possible to use multiple authentication and publish vcard odbc users?

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