On Monday, September 14, 2026, the Automated Commercial Environment starts rejecting entry summaries for certain copper articles where the primary country of smelt and the country of cast are not reported.

Rejecting, not warning. The error code exists already and has been returning as a warning; from Monday it returns as a fatal version, which means the entry does not go through.

If you import copper wire or cable, this is a four-day problem. If you do not, read the last section anyway, because the direction it points is not about copper.

What Is Required, and For What

The requirement took effect on July 30, 2026 under Section 232 of the Trade Expansion Act of 1962, and U.S. Customs and Border Protection set it out in a guidance message to the trade (CSMS # 69252300, issued July 15).

It applies to four subheadings of the Harmonized Tariff Schedule of the United States, the ten-digit code every import is classified under, covering certain copper wire and cable: 8544.42.10, 8544.42.20, 8544.42.90 and 8544.49.10. It applies to imports from every country of origin except the United States.

Three data elements are involved.

The primary country of smelt is required. Importers shall report it.

The country of cast is required. Importers shall report it.

The secondary country of smelt is optional. Importers may report it where applicable.

Where the information genuinely is not available, CBP's guidance permits reporting OTH, for other. That is a real provision and not a loophole, and it is worth knowing it exists before Monday rather than after.

What Changed on August 31

A second message, CSMS # 69711865, moved the enforcement date and is the reason some coverage has the wrong day. It states that ACE will begin rejecting entry summaries where the copper primary country of smelt and the country of cast are not reported, and that the F794 error will return as a fatal version when the required record is not submitted.

The date in that message is Monday, September 14, 2026. Several trade summaries published since have said the nineteenth. The CSMS is the operative document.

What to Do Before Monday

Work out whether any of your goods classify under those four subheadings. That is a question for your customs broker and it is answerable today.

If they do, the information has to come from your supplier, and it is not information most suppliers volunteer. Smelt is where the copper was refined from ore or scrap. Cast is where it was formed into the shape that was then drawn into wire. Neither is the same as where the cable was manufactured, and neither is the same as country of origin.

That last point is the one that catches people. A cable made in one country can easily contain copper smelted in a second and cast in a third. The manufacturer knows, or can find out from their own supplier. The importer usually has never asked.

Where the Direction Actually Points

Here is why this matters to importers who have never touched a copper cable.

Country of origin used to be one answer per product. It is becoming several. This rule asks for three separate origins on a single line: where it came from, where the metal was smelted, where it was cast. Steel and aluminium already carry comparable requirements. And the advance notice CBP published on September 2 asks whether importers should identify every party in the supply chain and file the export documentation their supplier lodged abroad.

Read together, those are not four unrelated rules. They are one direction of travel: from declaring the origin of a product to describing the provenance of what is inside it.

The practical consequence is unglamorous and worth acting on early. The information exists — a factory knows where its raw material came from — but it lives one or two tiers upstream of the relationship most importers actually have. Getting it requires asking a supplier a question they are not used to being asked, and the first time you ask is not the week the entry is being rejected.

This is general commentary, not legal or customs advice, and copper classification is genuinely technical. Confirm whether these subheadings apply to your goods with a licensed customs broker, and read the CSMS messages themselves rather than any summary of them, this one included.

So — if an entry of yours needed the country of smelt on Monday, who would you email, and would they know? And what do you use today to hold that kind of upstream detail against a product, so the second time somebody asks it takes a minute rather than a fortnight?