This article was created in response to a support issue logged with K2. The content may include typographical errors and may be revised at any time without notice This article is not considered official documentation for K2 software and is provided “as is” with no warranties.

Issue

Creating a system role breaks all member inheritance rights.

Example: if a user does not see any roles or is missing a role in K2 Management > Users > Roles:

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In this case the Package and Deployment role, the following error will be displayed to the user:

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Please note the moment a Role is created it cannot be deleted from Management and requires K2 support to assist with removal.

Symptoms

All members / users that were in the system role will lose their rights to create a new package for deployment:

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Troubleshooting Steps

If there are no roles in management, confirm that the role exists in the K2 Database first:

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If the roles exist this will indicate that a user with rights might have attempted to create the role again.

Contact K2 support for assistance as the current resolution is to restore a K2 database backup.

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. 
http://help.k2.com/onlinehelp/k2blackpearl/devref/current/default.htm#Database_Reference.html