CBP HSU 2620: Quartz Surface Products Quota HTS Updates in ACE
Key Points
- CBP released Harmonized System Update (HSU) 2620 on August 14, 2026, containing 16 harmonized tariff records and 53 Automated Broker Interface (ABI) records specific to the Quartz Surface Products Quota.
- The HTS updates in HSU 2620 implement Federal Register notice FR 2026-15975, published at 91 FR 50645 on August 5, 2026.
- ACE filers must use the updated HTS numbers when filing entries subject to the Quartz Surface Products Quota or risk rejection or quota misapplication.
- A separate ACE system issue causing delays in outbound notifications for Air, Ocean, Rail, Manifest, and In-Bond movements has been fully resolved as of August 19, 2026.
On this page
- What changed: HSU 2620 and its scope
- Regulatory basis: Federal Register notice 91 FR 50645
- Affected HTS numbers and ABI records
- Resolved: ACE outbound notification delays
- What importers and brokers should do
- Key references
CBP loaded new HTS and ABI records for the Quartz Surface Products Quota into ACE through HSU 2620, effective August 14, 2026. Filers submitting entries for quartz surface products subject to this quota must update their HTS classifications to match the new records or face filing errors and potential quota misapplication. The underlying authority is Federal Register notice 91 FR 50645, published August 5, 2026.
The links in this article go to the primary documents: the Federal Register notice, CBP CSMS messages, and official tariff schedule pages themselves. Read the source.
What changed: HSU 2620 and its scope
CSMS 69578857, issued August 19, 2026, announces that HSU 2620 was created on August 14, 2026. It carries:
- 16 harmonized tariff records updated in the Harmonized Tariff Schedule of the United States (HTSUS)
- 53 ABI records updated in ACE to reflect the new quota coding
All changes relate exclusively to the Quartz Surface Products Quota. No other commodity chapters or quota programs are affected by this update.
Regulatory basis: Federal Register notice 91 FR 50645
The quota HTS modifications stem from FR 2026-15975, published at 91 FR 50645 on August 5, 2026. That Federal Register notice is the controlling authority for the quota structure and the specific HTS line changes. Filers and compliance teams should pull the full notice from federalregister.gov to confirm which HTS provisions were added, modified, or renumbered before updating classification databases.
Affected HTS numbers and ABI records
CBP has not published a line-by-line enumeration of the 16 affected HTS numbers in the CSMS message itself. The detail sits in the Federal Register notice (91 FR 50645) and in the related earlier message, CSMS 69509193. Brokers and importers should cross-reference those documents against their tariff management systems to identify every affected provision. Classification errors on quota-sensitive entries can result in over-quota duty rates being applied or quota charges being missed entirely.
Questions about the specific HTS changes should go directly to the CBP Headquarters Quota and Agriculture Branch at HQQUOTA@cbp.dhs.gov.
Resolved: ACE outbound notification delays
Separately, CSMS 69578630, also issued August 19, 2026, confirmed that delays in outbound ACE notifications for Air, Ocean, Rail, Manifest, and In-Bond movements have been resolved. The incident was first flagged in CSMS 69571234. Filers who experienced missing or late system notifications during that window should verify that all expected acknowledgments and responses were received and reconcile any entries or in-bond movements that may have been held pending those notifications.
What importers and brokers should do
- Pull Federal Register notice 91 FR 50645 (published August 5, 2026) and identify every HTS provision modified by the Quartz Surface Products Quota update, then update your classification and entry-filing systems to match HSU 2620.
- Review any quartz surface product entries filed on or after August 14, 2026, to confirm they use the correct updated HTS numbers; entries filed with superseded codes may require post-summary correction.
- Audit ACE notification logs for the period before August 19, 2026, to identify any Air, Ocean, Rail, Manifest, or In-Bond movements affected by the outbound notification delay and confirm all dispositions are complete.
- Direct classification or quota-coding questions to CBP Headquarters Quota and Agriculture Branch at HQQUOTA@cbp.dhs.gov.
Key references
- CSMS 69578857 - CBP announcement of HSU 2620 and Quartz Surface Products Quota HTS updates (August 19, 2026)
- CSMS 69578630 - Resolution of ACE outbound notification delays for Air, Ocean, Rail, Manifest, and In-Bond (August 19, 2026)
- Federal Register notice FR 2026-15975, 91 FR 50645 - Quartz Surface Products Quota HTS modifications, published August 5, 2026
- Harmonized Tariff Schedule of the United States (HTSUS) - Official tariff schedule reflecting HSU 2620 updates
- CBP.gov - CBP Headquarters Quota and Agriculture Branch contact and quota program guidance
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