duplicate metadata from an IdP

[Brian Tingle]

I have this in my attribute map


    <Attribute name="urn:mace:dir:attribute-def:mail" id="mail"/>

    <Attribute name="urn:oid:0.9.2342.19200300.100.1.3" id="mail"/>

For most of my users, their IdP only sends one or the other of these attributes

One of my campuses sends me BOTH attributes.

My vendor application ends up seeing "user at example.edu;user at example.edu" as the email address.

Is this
  a) something I can work around in attribute-filter.xml?
  b) something I need to contact the IdP about (asking them to send one or the other)?
  c) something I need to file a bug against my vendor application for?
  d) some other option

Thanks for any advice you might have -- Brian

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