Online retailers: Automatically synchronize waybill vs. shipping label
In e-commerce shipping, a shipping label refers to the package label containing recipient, sender, tracking, and carrier data. For international shipments, this label alone is rarely sufficient. Supplementary customs documents are required, and their information must precisely match the label. Discrepancies in weight, number of packages, or value of goods can lead to customs delays. Automated platforms like Paket International synchronize labels and documents directly during creation, preventing such discrepancies from the outset.
In short:
- For international shipments, the shipping label must exactly match the customs documents, otherwise delays or returns may occur.
- The label contains important information such as the number of packages, weight, value of goods and type of goods, which must be confirmed by customs.
- Automated platforms like Paket International create and synchronize labels and customs documents to avoid discrepancies.
- Errors in information such as the number of packages or the value of goods often lead to customs problems; therefore, systematic checking before shipping is essential.
- Multi-carrier software and EDI data enable automatic, error-free creation and transmission of all shipping and customs data.
Table of Contents
- Shipping label vs. waybill: What's really behind them?
- Why do the label and customs documents have to match exactly?
- How to create correct labels and customs documents
- EDI, multi-carrier software and automatic label management
- Checklist before printing and handover to the parcel service
- International Parcel: Automated synchronization of label and customs
- Sources
Shipping label vs. waybill: What's really behind them?
A shipping label is the adhesive label affixed to a package or pallet. It contains the recipient's address, sender's information, weight, number of packages, and a tracking barcode that the parcel service scans during sorting. When people search online for "waybill vs. shipping label" in everyday e-commerce, they almost always mean precisely this type of label, not the classic freight forwarding document for groupage truck transport. The confusion arises because both documents contain similar basic information: sender, recipient, and weight. However, their applications differ significantly: A waybill governs the legal liability between the freight forwarder and the carrier for larger goods shipments. A shipping label, on the other hand, is the operational basis for parcel and small shipment delivery via courier, express, and parcel (CEP) services such as DHL, UPS, FedEx, or DPD.
Several label types are used in parcel shipping, depending on the type of shipment:
- Package label: Standard label for individual cartons with tracking number and destination address.
- Pallet label: Also contains information on the stacking height and the total weight of the loading unit.
- Return label: Pre-printed return label that the customer includes with the package or generates online.
Each of these fields has a function that goes beyond mere delivery. The barcode, for example, controls the automatic sorting in the distribution center. Weight and number of packages are also factored into customs inspection as soon as the shipment crosses a border outside the EU. This is precisely where the real challenge begins: the label alone is not enough; it must match the accompanying documents.
Why do the label and customs documents have to match exactly?
Customs does not check the label in isolation, but compares it with the accompanying documents. According to the DHL Express customs clearance requirements Customs-relevant information on shipping documents and accompanying paperwork must be identical. The number and weight of packages are among the most common sources of error.
Five fields require absolute consistency between label and document:
- The number of packages is exactly as packed in the box.
- The total weight, actually weighed, not estimated.
- The value of the goods in the specified currency.
- The product description is precisely formulated instead of generically like "products".
- The customs tariff number (HS code) that uniquely classifies the type of goods.
For exports valued over €1.000, an export declaration (ABD) is also required. For smaller postal shipments, a customs declaration is often sufficient. CN22 for parcels up to approximately €350CN23 is used for higher values. Courier, express, and parcel (CEP) services like UPS or FedEx, however, usually require a commercial or pro forma invoice instead of the CN22/CN23 forms. If the information provided differs, customs will stop the shipment, request additional documents, or return the package. In the worst case, penalties may be imposed that can significantly exceed the value of the goods.
How to create correct labels and customs documents
The process doesn't begin at the printer, but within the system. Following the correct sequence will save you from later inquiries from customs.
Step 1: Check the data source. The ERP system or online shop provides the basis. Address format, HS code and merchandise value must be validated before label creation, not afterwards.
Step 2: Determine the appropriate customs document. For small consignments below the CN22 threshold, a customs declaration is sufficient. Larger consignments require a CN23 or a commercial invoice; for exports exceeding €1.000, an export declaration is also required.
Step 3: Generate labels and transfer data. The label data must be transmitted to the parcel service via EDI at the same time, otherwise the sorting center cannot assign the shipment.
Step 4: Print and attach. The label goes on the outside of the package, as does the document pouch containing the customs papers, clearly visible for customs inspection.
There's a special rule for pallets: It's not the number of individual boxes that counts, but the total number of loading units. Mixing these up creates precisely the discrepancy that later leads to inquiries.
Pro tip: Define a fixed definition for "number of packages" in your ERP system and train your team accordingly. Many delays arise simply because shippers and logistics providers use different counting methods.
Detailed instructions for Create shipping labels for online retailers shows the individual field requirements in detail.
EDI, multi-carrier software and automatic label management
The technical basis behind a correct label is usually invisible, but crucial. EDI data (Electronic Data Interchange) must arrive in the parcel service's system at the same time as the physical handover of the package. If this synchronization is lacking, the sorting system cannot assign the shipment, leading to delays in the distribution center.
Multi-carrier shipping software solves precisely this problem by acting as an intermediary between the shop and multiple parcel services. It automates label printing and enables rate shopping across different providers, which, according to Logistics Journal Scalability and error reduction in fulfillment have been significantly increased.
This results in three practical advantages for shippers with increasing shipment volumes:
- Rate Shopping automatically selects the cheapest or fastest carrier for each shipment.
- Your own contract terms (bring-your-own-contract) can be integrated into the software without switching portals.
- Tracking data flows back centrally, reducing queries about the shipment status (WISMO).
The effect is less manual portal work, faster customs processing due to consistent data, and lower operating costs through less rework. Those who CN22/CN23 differences Once you understand it, you quickly realize why this automation is virtually indispensable, especially with increasing parcel volumes.
Checklist before printing and handover to the parcel service
Before every international broadcast, a quick system check is worthwhile to catch typical errors in advance:
- Check the address format and sender details for completeness.
- Check the number of packages and their weight against the packing list.
- Check the product description, customs tariff number, and product value.
- Attach the document pouch to the outside of the package, never place it inside the box.
- Test the barcode for readability and print quality.
- Set the print format according to the carrier's specifications (usually thermal printing).
According to DHL, customs-related documents must always be attached to the outside of the shipping label, clearly visible. Checking off these six points before each shipment significantly reduces the error rate. Further details on formats and field requirements can be found in the guide. Shipping documents.
International Parcel: Automated synchronization of label and customs
The aforementioned sources of error—differing package counts, missing shipping labels, inconsistent goods values—mostly arise when labels and customs documents are created separately. Paket International addresses precisely this issue: The platform automatically calculates shipping costs and customs duties and simultaneously generates shipping labels and associated customs documents from the same data.
This significantly reduces manual paperwork and can lower shipping costs. Sea Significantly reduce the information provided by Paket International. Shippers maintain an overview of their shipments via a central dashboard, while proactive customer service and automated customs clearance further reduce operational effort. Anyone wanting to get an impression of what this looks like in practice for e-commerce shippers can find information on the SellerDay 2026 opportunity to do so.
For retailers who regularly ship across borders, it's worth taking a look at the page on international customs clearanceThere, you can check, without obligation, how much time and money you can save through the automatic synchronization of labels and customs documents in your own shipping volume.
Sources
- DHL Express – Customs Clearance Requirements (PDF)
- Sending a package to a third country: Customs & documents explained simply | Shipping glossary
- Multi-carrier shipping software for your company – Logistics Journal