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I think a default setting changed. Try setting either isRequired="true" in the RequestedAttribute element, or onlyIfRequired="false" in the PermitValueRule.
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<div class="">Tom.</div>
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<div class="">On Dec 20, 2017, at 5:05 AM, Jukka Hakosalo <<a href="mailto:jhakosal@gmail.com" class="">jhakosal@gmail.com</a>> wrote:</div>
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<div dir="ltr" class="">Thanks Peter but I think the resolver is ok. SP gets "sn" if it's type is "ANY", not "attributeInMetadata".<br class="">
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<div class="gmail_quote">On Wed, Dec 20, 2017 at 2:38 PM, Peter Schober <span dir="ltr" class="">
<<a href="mailto:peter.schober@univie.ac.at" target="_blank" class="">peter.schober@univie.ac.at</a>></span> wrote:<br class="">
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* Jukka Hakosalo <<a href="mailto:jhakosal@gmail.com" class="">jhakosal@gmail.com</a>> [2017-12-20 04:49]:<br class="">
<span class="">> this example only mail and eppn are released. What's wrong with<br class="">
> AttributeInMetadata? Idp ignores it. Log shows no error.<br class="">
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<span class="">> <AttributeRule attributeID="sn"><br class="">
> <PermitValueRule xsi:type="AttributeInMetadata" /><br class="">
> </AttributeRule><br class="">
</span>[...]<br class="">
<span class="">> <md:RequestedAttribute FriendlyName="sn" Name="urn:oid:2.5.4.4"<br class="">
> NameFormat="urn:oasis:names:<wbr class="">tc:SAML:2.0:attrname-format:<wbr class="">uri"/><br class="">
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