CN23 and electronic customs data: what Kakobuy Spreadsheet buyers should prepare in 2026
Postal and courier parcels are no longer cleared by a paper label alone. Buyers using the Kakobuy Spreadsheet should understand the basics of CN23, electronic advance data, HS codes, and product descriptions before choosing cheap postal lines. You do not need to become a customs broker, but you should stop treating the declaration screen as an afterthought.
CN22, CN23, and electronic advance data
CN22 and CN23 are standard postal customs declaration formats. The Universal Postal Union and customs authorities increasingly rely on electronic advance data, often including sender and recipient information, item descriptions, weights, values, and HS tariff codes for commercial goods. Royal Mail guidance, for example, states that electronic customs pre-advice data and an S10 barcode are mandatory for international shipments and that missing data can delay or return items. Reference: Royal Mail export customs data guidance.
Why this matters to agent-shopping parcels
Kakobuy buyers often build parcels from several sellers. The warehouse sees one outbound parcel; customs data still needs to describe the contents. If your haul contains five unrelated categories, the declaration has to make sense item by item. That is harder when you casually add a belt, perfume, earbuds, and two shirts just because they were cheap in the spreadsheet.
| Customs data field | Buyer meaning | Better habit |
|---|---|---|
| Description | Plain product name | Use “cotton T-shirt,” not “fashion item” |
| HS code | Tariff classification | Keep categories simple and consistent |
| Quantity | Number of units | Know what is inside the parcel |
| Value | Declared customs value | Keep order totals and screenshots |
| Origin | Country where goods originate | Do not guess if the carrier asks for detail |
Postal lines reward boring parcels
The more postal data is automated, the more boring parcels win. A clean apparel-only parcel is easier to describe than a mixed parcel containing Electronics, Perfume, and Shoes. If your cart is complicated, compare specialised freight lines using the freight line picker rather than forcing everything through the cheapest postal option.
CN23 is not a place for creative wording
Many parcel delays begin with vague or inconsistent wording. “Gift,” “sample,” or “clothes” may not be enough for commercial-looking e-commerce flows. Modern systems want specific content descriptions, and countries may require HS codes or electronic pre-advice before arrival. If a carrier or agent asks for more detail, use factual item names that match the parcel.
A buyer-side preparation workflow
- Before ordering, use category pages such as T-shirts, Hoodies, and Accessories to keep lanes organised.
- After QC approval, make a simple list of item nouns and quantities.
- Before consolidation, decide whether batteries, perfume, or branded leather should be separated.
- Before shipping, compare the parcel against EU pre-arrival data expectations if the destination is Europe.
- Keep all Kakobuy order records until delivery is complete.
How this differs from tax planning
CN23 and electronic advance data are about describing the parcel. Tax and duty are about what the destination country charges after interpreting that data. The two are connected, but they are not the same. For EU buyers, read this guide together with the July 2026 €3 parcel duty update.
Bottom line
Postal customs is becoming more electronic, more structured, and less tolerant of vague item data. Kakobuy Spreadsheet buyers can adapt by building cleaner parcels, keeping better row records, and choosing freight lines that match the real contents of the haul.
Next: Kakobuy Spreadsheet & checkout prep
Ready to move from notes to links? Start on the Kakobuy Spreadsheet home , browse our on-site category lanes and Kakobuy Spreadsheet home when you want curated picks, then walk through the how-to-buy guide before you paste marketplace URLs into your Kakobuy session—warehouse QC and shipping choices stay on Kakobuy. Crowd timelines live on Buyer shares.
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