Mistake 1: Defaulting to EAR99
The most dangerous classification error is assigning EAR99 without systematically reviewing the CCL. EAR99 requires positive evidence that all applicable ECCNs have been evaluated and eliminated. Never assign EAR99 by default, by assumption, or because you cannot find a matching ECCN.
Always document your classification analysis showing which ECCNs you considered and why each was eliminated. This documentation is essential for audit defense.
Mistakes 2-4: Technical Oversights
Ignoring the General Information Security Note (GISN) is extremely common. Any item that incorporates encryption must be evaluated against Category 5 Part 2, regardless of the item's primary function. A medical device with encrypted data transmission, for example, must be checked against 5A002. Another frequent error is confusing 'designed for' with 'used for' — classification is based on technical design parameters, not how the item happens to be used. The third common technical error is overlooking sub-paragraphs and suffixes within an ECCN entry. The difference between 5A992 and 5A992.c can determine license requirements.
Mistakes 5-8: Process Failures
Failing to reclassify after product updates is a systemic risk. When specifications change, the ECCN may change. Not checking 600-series priority is another process gap — 600-series ECCNs take precedence over all other CCL entries. Using outdated CCL data leads to incorrect classifications as the CCL is updated regularly. Finally, not documenting the classification rationale creates audit vulnerability even when the classification itself is correct.
Establish a classification review process that triggers reclassification whenever product specifications change, and maintain written records of all classification decisions.