Tracking a score is simple. Tracking learning state correctly is not. SCORM 2004 introduced a data model that separates completion, success, and progress. If you misunderstand that separation, your LMS behavior will never be predictable.
Most SCORM bugs are not sequencing problems. They are session lifecycle problems. If learner data disappears, completion is inconsistent, or LMS states look unpredictable, the Run-Time Environment is usually where the mistake begins.
SCORM 2004 is not just “SCORM 1.2 but newer.” It is a layered architecture with clearly separated responsibilities.
If you have ever struggled with inconsistent LMS progression, unclear completion rules, or vendor specific behavior, you have already felt why SCORM 2004 became necessary.