<value><string>Returns Http500 - Server Error by default. The error code can be modified by the caller as well as returned value (return_none=True).\r\n
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NOTE: We need both \'validate\', \'validate_action\' in the Script(after) and the URL respectively.\r\n
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The validate_action in the URL is needed for user action.\r\n
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The one in Script(after) is needed when the transition is called from portal_workflow.doActionFor.</string></value>