CE Mercante Rectification: the Deadline That Sets the Cost

Brazil’s Federal Revenue Service charges a BRL 5,000 fine for every CE Mercante (the electronic cargo manifest record in Siscomex) rectified after the deadline, with a five-year statute of limitations. For the operations team at a freight forwarder handling dozens of CEs each week, the fine is the most visible cost. The block is worse: while a CE is under rectification, Siscomex Carga locks the record, and no DUIMP (Brazil’s single import declaration) linked to it can move forward. Since July 2026, when NCM (the Mercosur tariff classification code) became a mandatory field on the CE, the number of ways a CE can diverge from the import declaration has grown.

This article explains how rectification works, where the errors originate and what an operations team can do to fix most of them before the vessel berths, while correction is still free.

The CE Mercante has two correction windows, and the second is expensive

The first window is a direct edit in the Mercante system before the vessel’s first berthing in Brazil. The carrier has up to 48 hours before berthing at the cargo’s port of destination, and the same deadline applies to the freight forwarder for deconsolidating the master bill and registering the house bills. Inside this window, the correction is automatic, free and immediate. For short routes, such as those from Uruguay, Argentina or Panama, the window can shrink to 12 to 24 hours before arrival, leaving even less room to react.

The second window opens after berthing. From that point on, any change to the CE requires formal rectification. Automatic rectification, where the system processes the request without human review, takes about 24 business hours. When the field being changed is not eligible for automatic approval, the only path is a petition to the Federal Revenue unit overseeing the clearance. The review period starts at 10 business days just for the initial response, and the Revenue Service may request additional documents, pushing the timeline out to weeks.

The BRL 5,000 fine per occurrence is applied to whoever is responsible for the incorrect information. In a consolidation with five house bills, if the error is on the master, the fine applies once; if each house bill has a different error, it can apply five times. The five-year statute of limitations means the Federal Revenue can issue an assessment for a CE registered today as late as 2031.

The errors that drive most rectifications originate in the pre-alert

The CE Mercante is fed from the information the carrier or NVOCC registers in the Mercante system. For consolidated cargo, the freight forwarder in Brazil registers the house bills based on the pre-alert received from the overseas agent. The most frequent errors are the same ones that show up in import document checks: the consignee’s legal name spelled differently from the importer’s Siscomex registration, a generic cargo description that does not match the declared NCM, gross weight differing from the packing list and the final port of destination confused with the transshipment port.

Each of these fields is validated by Siscomex at different stages of the process. The mismatched legal name surfaces when the customs broker tries to link the CE to the DUIMP. The weight discrepancy shows up when the terminal weighs the cargo and updates the manifest. The generic description becomes a problem during customs channel assignment, because the inspector compares what is on the CE with what is on the declaration. In every case, rectification is the only way to release the shipment, and if the vessel has already berthed, the path is the formal one.

In our experience with freight forwarders in Brazil, a pre-alert that arrives incomplete or carrying data copied from a previous shipment is the source of most rectifications. A field that the overseas agent left blank or filled with the previous shipment’s default becomes a block in Brazil that the local operator must resolve within a deadline that has already started running.

The CE block cascades into the DUIMP

When a CE Mercante enters rectification, Siscomex Carga locks the record automatically. As long as the lock is active, no import declaration can be filed against that CE. In practice, the cargo sits at the bonded terminal, accumulating storage charges and, if free time has expired, demurrage and detention.

The problem compounds when the CE belongs to a consolidation. If another house bill under the same master already has an import declaration or a DTA (internal transit authorization) linked to it, automatic rectification is no longer available. The system requires a petition, because altering the master could affect declarations already filed. A single error on one CE can hold up clearance for every house bill in that consolidation, including those with correct data.

As the CE Mercante and the DUIMP grow more tightly integrated inside Brazil’s Portal Unico (the single trade window), data quality on the CE has a direct impact on the import declaration workflow. A CE that once got corrected as a quick fix can now stall customs clearance for an entire shipment batch.

Mandatory NCM on the CE has widened the mismatch surface

Since July 2026, NCM is a mandatory field on the CE Mercante. Previously the field existed but could be left blank without the system rejecting the registration. With the new requirement, the NCM on the CE must match the NCM declared on the DUIMP. When the two diverge, the Federal Revenue blocks the process until one of the documents is rectified.

NCM is a field that overseas shippers often fill in incorrectly, because Brazil’s tariff classification follows the Mercosur Common Nomenclature and does not always correspond to the classification used in the country of origin. The freight forwarder registering the house bill in the Mercante system needs to verify that the NCM from the pre-alert matches the one the customs broker will declare on the DUIMP. When that check does not happen, the operator discovers the mismatch only after berthing, when correction already costs BRL 5,000.

Making NCM mandatory on the CE has added one more checkpoint to the operator’s routine. The field needs the same attention as the consignee’s legal name or gross weight: checked before berthing, compared against the customs broker’s classification and corrected within the free window if there is a discrepancy.

Pre-berthing review is the only affordable safeguard

Reviewing a CE before berthing costs the operator’s time. Letting an error through costs fines, a system lock, storage charges and, in consolidations, delays on shipments that had nothing to do with the original mistake. The tradeoff is obvious, but a heavy workload makes it easy to skip the review on a shipment that “looks fine.”

What to verify on each house CE before the 48-hour deadline:

• Consignee legal name, spelled exactly as it appears in the importer’s Siscomex registration.
• NCM, compared with the classification the customs broker will use on the DUIMP. If the broker has not yet confirmed the NCM, the operator needs to request it before registering the house bill.
• Gross weight and volume, checked against the packing list. If the terminal records a different weight after berthing, rectification is unavoidable, but at least the other fields will already be correct.
• Final port of destination, which must be the port where the cargo will actually be discharged, not the transshipment port.
• Cargo description, specific enough to avoid questions during customs channel assignment.

The review works when it is built into the process rather than left to whoever notices first. The freight forwarders that get this right treat house CE registration as a defined step with its own checklist, not a task that runs on memory.

How Tier2 Cargo keeps CE data aligned with the shipment

The fields the Mercante system requires on the CE are the same ones Tier2 Cargo records throughout the import process: consignee, NCM, weight, port of destination, cargo description. When the operator fills in the shipment in Tier2 Cargo, these data points live in one place and can be compared against the pre-alert before the house bill is registered in Mercante. If the pre-alert data diverges from what the customs broker provided, the discrepancy shows up in the shipment record, before berthing.

Tier2 Cargo records the CE Mercante as one of the operational milestones on the shipment and links each CE to the corresponding house bill. This makes it possible to track which shipments have had their CE registered, which are still pending and which required rectification, without relying on a separate spreadsheet.

Learn about Tier2 Cargo or get in touch.

Reviewing the CE before berthing takes minutes per shipment. Rectification afterward costs money, days and, when a consolidation locks up, delays on shipments that had nothing to do with the original error.