ADFS Rejecting SAML Assertion

Document ID : KB000074917
Last Modified Date : 27/03/2018
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Issue:
ADFS is rejecting the assertion from SM, complaining that the SPID was not passed in URI format.  The SPID format is 'unspecified'.
Cause:
Regardless of the attribute format, ADFS expects the SPID to be of the https://name.sub.domain format.  As Siteminder doers not have such a limitation, the customer had configured a value without 'https://' in front of it.
Resolution:
Configure the SPID value to be URI format.  It should look like a root URL: https://SPID.company.com