The SCORM 2004 specification allows success status and scores to persist for global learning or competency objectives. Precautions must be taken to avoid accidental collisions between objective identifers. Also, in practice this feature is often perverted to provide a kind of variable to allow communication between activities. This can unfortunately lead to the pollution of LMS data stores with persistent records for meaningless data that do not correspond to any actual learning or competency objective. This new document at
http://www.ostyn.com/standards/docs/globalobjbp.htm describes the issues and proposes some proactive best practices to problems in the future.
