The TTB tested distilled spirits for compliance issues. The most commonly found problems, listed in order, were:

1. Alcohol content: over
2. Alcohol content: under
3. Government warning has errors
4. Non-mandatory information differs from the COLA
5. Mandatory information differs from the Certificate of Label Approval (COLA)
6. Prohibited practices
7. Paste over label
8. Mandatory information on wrong label
9. Statement of average analysis or serving facts statement is missing or is incorrect
10. No COLA
11. Class, type, or statement of composition is incorrect