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After performing a re-configuration of K2 Blackpearl, the K2 web parts on your SharePoint site returns an error.
The following error is presented on the Web Part:
Claim mapping configuration cannot be found for this claim. Claim information: Name='0#.w|******\administrator', Issuer='SharePoint', Original Issuer='SharePoint'. Please ensure that you have configured the K2 server as specified in K2 Help: Installation and Configuration > Configuration > SharePoint > Claims-based Authentication."
The error indicates that the SharePoint issuer is not mapped to a K2 security label in the [K2].[Identity].[ClaimTypeMapping] table.
This has been identified to be a known issue where re-configuring K2 Blackpearl causes all IssuerID values in the [K2].[Identity].[ClaimTypeMapping] table to point to the Windows STS issuer.
To rectify this, direct database modification will be required. Please log a K2 Support Ticket on the K2 Customer Portal for further assistance.
Do not modify any database definition or database content unless specifically instructed to do so by K2. No changes to the K2 Database definition or content are supported unless specifically instructed by K2. Please see: http://help.k2.com/onlinehelp/k2blackpearl/devref/current/default.htm#Database_Reference.html