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Every message from the CBP Cargo Systems Messaging Service (CSMS), with a plain-English summary and Allied CHB's position. We add new messages every hour.
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CBP Updated Draft ACE CATAIR for Air Waybill Minimum Length
CBP posted an updated ACE Cargo Release CATAIR document. It set a minimum of 7 characters for the Air Master Bill of Lading under SE15 Note 1. CBP said the related validation rule (rule 029) would deploy no earlier than March 5, 2026.
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This update concerns the technical data format used to transmit the Air Master Bill of Lading through ABI. It affects how we format air waybill data on the entries we file, not what importers must submit. Clients do not need to act on this; contact us if you have questions about a specific air shipment entry.
CBP resolved January ACE EDI slowdown affecting Air and Entry Summary filings
CBP announced it completed troubleshooting network connections that had slowed EDI message processing for the ACE application. CBP confirmed EDI processing resumed and ACE portal applications were functioning properly, with the system continuing to process a backlog of transactions until complete. This message was published January 24, 2026.
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This was a temporary system outage notice from January 2026 and CBP reported it as resolved at the time. It required no action from clients then and has no bearing on entries filed today. If clients see unrelated filing issues now, they should contact us so we can review the specific entry.
CBP reported ACE slow processing issues affecting Air and Entry Summary EDI in January 2026
CBP announced continuing network issues causing slow processing in ACE for Air EDI and Entry Summary EDI. CBP asked the trade not to resend transmissions, stating initial transmissions would still be processed. CBP warned that resending transmissions would cause additional delays. The message did not give a timeline for resolution.
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This was a temporary system slowdown CBP reported in January 2026. It does not describe a current issue, and later CBP messages may have addressed it. Clients do not need to act now, but if they have questions about delayed filings from that period, they should ask Allied to review the affected entries.
CBP reported slow processing in ACE Air and Entry Summary EDI
CBP announced network issues causing slow processing in ACE Air EDI and ACE Entry Summary EDI. CBP said it was working to fix the issue and would send an update once resolved. The message did not name a cause or give a timeline.
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At the time, this meant filers could see delays transmitting air cargo and entry summary data through ACE. CBP has likely resolved this issue since the message is over eight months old, and later CSMS messages may have provided updates. Clients do not need to act, but they can ask Allied to confirm the status of any specific entry from that period.
CBP resolved brief ACE EDI slowdown from January 2026 maintenance
CBP announced a network restart between 8:00pm and 9:00pm EST that caused temporary delays in processing incoming EDI messages for ACE Air and Entry Summary. CBP asked users not to refile messages that received no response during the window, since those would process once the connection was restored. Users could also see slowness in ACE Portal applications during that time. This affected importers, brokers and carriers filing through ACE that evening.
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This was a routine, one-time maintenance window from January 2026 and has already passed. It did not change any filing requirements or deadlines. Clients do not need to take any action regarding this notice.
CBP Added Notify Parties Feature to ACE Portal in January 2026
CBP announced that on January 2, 2026 it enhanced the ACE Secure Data Portal to let importers who are Trade Account Owners add notify parties, also called Special Address Notification (CBP Form 4811) notify parties, under the Notify Parties tab in the Importer sub-account view.
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This was an optional ACE Portal feature for importers who manage their own Trade Account Owner sub-account, not a filing requirement. It did not change how we file entries for clients. Clients who want to add notify parties in their own ACE Portal account can do so, but they do not need to take any action with us because of this change.
CBP expanded ACE Portal access for refund authorization in December 2025
CBP announced on December 16, 2025 that it enhanced the ACE Portal to give more account users access to the ACH Refund Authorization tab under the Importer sub-account view. CBP held a deployment support call on December 17, 2025 to explain the change and answer questions. The notice pointed users to an information notice for more detail.
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This update affected how importer account users see and manage refund authorization settings in the ACE Portal, not how we file entries. Later CSMS messages may have changed portal access or refund procedures since December 2025, so clients should ask us about the current process for their entries. Clients do not need to take any action based on this message alone.
CBP posted an updated ACE development and deployment schedule
CBP announced in December 2025 that an updated ACE Development and Deployment Schedule was available on CBP.gov. CBP noted that the schedule was notional and subject to change. It pointed readers to CBP.gov/ACE for the most current information on ACE deployments.
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This was an information notice and clients did not need to act. Later CSMS messages may have changed the schedule, so clients should ask Allied if they have questions about ACE changes affecting their entries.
The summaries and positions are general information, not legal advice. Always check the official CBP message, which each page links to.
Does a change affect your entries?
Call (908) 291-8001 or email info@alliedchb.com