The tracking number is the unique alphanumeric identifier that the carrier assigns to each shipment to enable precise tracing throughout the entire logistics chain. Without this code, no tracking system can locate a specific package among thousands. The role of the tracking number in shipment tracking goes far beyond being a simple code: it is the axis around which traceability, customer communication and incident management revolve. If you manage shipments as a business or entrepreneur, understanding how this identifier works saves you time, money and unnecessary claims.
What is the role of the tracking number in shipment tracking?
The tracking number acts as the "correlation key" in logistics systems: it links every event related to the package and displays the updated history to the customer in real time. Each time the package passes through a checkpoint, the carrier scans this code and records the status. The result is a chain of data visible to both the sending company and the final recipient.
The difference between the tracking number and the internal order number is fundamental. The order number is generated by your management system or online store. The tracking number is generated by the carrier, such as Correos, MRW, SEUR or GLS, at the moment the label is created. Only the tracking number is valid in the carrier's official locator for external queries.
The carrier's unique locator distinguishes one package among thousands and prevents erroneous tracking. This also protects the recipient's privacy: the General Data Protection Regulation (GDPR) prevents tracking a shipment using only a name or address. The alphanumeric code is the only valid method for public queries.
How is the tracking number generated and used in the logistics chain?
The tracking number is generated when the shipping label is created, then scanned at each checkpoint and updates the progress visible to both the customer and the company. This process is especially relevant in international logistics, where transparency and control are essential for managing customs and delivery deadlines.
The complete cycle of the tracking number follows these steps:
- Label creation: The carrier generates the alphanumeric code and prints it on the physical or digital label. At this point, the number is registered in the carrier's system.
- Package pickup: The courier scans the label when collecting the shipment. The system records the time, location and initial status.
- Transit and checkpoints: Each warehouse, logistics hub or customs border scans the code. Each scan updates the status in real time.
- Final delivery: The courier scans the code when delivering the package. The system records the delivery as completed and, in many cases, captures the recipient's digital signature.
In international shipments, the tracking number also facilitates customs procedures. Platforms such as Importa Fácil in Peru require a valid tracking number to check the status of a postal shipment in official government systems. Without this code, the query is simply not possible.
Professional tip: If you use a multicarrier platform like Jetsend, the tracking number from each carrier is centralised in a single dashboard. This eliminates the need to access multiple portals and reduces the management time per shipment.
Why does the tracking number prevent errors in shipment tracking?
Confusing the internal order number with the carrier's tracking number is the most frequent mistake made by customer service and logistics teams. Using the internal order number instead of the official tracking number causes errors such as "shipment not found", which multiplies support incidents and damages the customer experience.
The most common problems that can be prevented with correct use of the tracking number are:
- "Shipment not found": This occurs when the internal order number is entered into the carrier's tracking tool. The solution is to correctly map the tracking number field in the management system from the outset.
- Tracking on the wrong portal: If the package is travelling with SEUR but is looked up on the Correos portal, the result will always be negative. Each tracking number belongs to a specific carrier.
- Outdated data on aggregators: Generic tracking portals may show delays of several hours compared to the carrier's official portal. This causes unnecessary alarm for both the customer and the support team.
- Exposure of personal data: Sharing the internal order number can reveal sensitive commercial information. The tracking number, on the other hand, only identifies the shipment without exposing business data.
For tracking returned packages in transit, the tracking number is also the only valid identifier for managing the return with the carrier.
Professional tip: Always store the tracking number in the same order field in your ERP or online store. Train your customer service team to ask for this code - not the order number - when a customer reports a problem with their shipment.
Tracking number versus other identifiers in shipments
Several codes coexist on a shipping label. Knowing which one to use in each situation avoids internal and external confusion. Labels or confirmations often contain multiple identifiers, but the carrier's tracking number is the only one valid for public and external tracking.
| Identifier | Generated by | Main use | Valid for external tracking |
|---|---|---|---|
| Tracking number | Carrier (SEUR, MRW, GLS…) | Official shipment tracking | Yes |
| Order number | Internal system / ERP / store | Internal business management | No |
| Internal reference | Seller or sending company | Internal control and reconciliation | No |
| GS1 barcode | International standard | Product identification | Only with some carriers |
The internal reference allows the warehouse or administration team to locate an order within their own system. It has no value on the carrier's portal. The tracking number, on the other hand, is the official identifier that Correos, GLS, DHL or any other carrier recognises in order to provide shipment status information.
When you integrate both identifiers into an ERP system such as SAP, Odoo, or any e-commerce platform such as Shopify or WooCommerce, the correct approach is to store them in separate fields. The order number goes in the internal reference field. The tracking number goes in the carrier-specific field. This separation prevents the support team from making the mistake of sharing the wrong identifier with the customer.
To better understand the differences between internal and carrier tracking, it is worth reviewing how each type of code fulfils a different function in the logistics chain.
How to optimise shipment tracking with the tracking number?
Correctly integrating the tracking number into ERP systems and online stores is the foundation for efficient management and for improving the customer experience. Correctly mapping the carrier field reduces failures and improves communication of the shipment status at every stage.
These are the practices that make a difference for e-commerce businesses and companies:
- Automate sending the tracking number to the customer. Configure your store or ERP so that, as soon as the carrier generates the label, the customer receives an email or SMS with the tracking number and a direct link to the carrier's official portal. This reduces "where is my order?" enquiries by between 30% and 50%, according to industry operators.
- Always validate on the carrier's official portal. Validating tracking on the website of the carrier that has physical custody of the package is best practice. Generic aggregators may show delays in updates, leading to incorrect diagnoses.
- Centralise tracking numbers in a single dashboard. If you work with several carriers, managing each number on different portals wastes time and causes errors. A multicarrier platform centralises all tracking codes in one place.
- Document incidents using the tracking number. When a shipment has a problem, open the incident with the carrier always using the tracking number. This speeds up resolution because the carrier locates the package immediately.
- Use the tracking number for international shipments from the very start. In international logistics, global order tracking depends on the tracking number being compatible with the customs systems of the destination country. Verify this before contracting the service with the carrier.
For sole traders or small teams, the guide on shipment management in a one-person business offers a practical approach to implementing these best practices without the need for complex technological infrastructure.
Key points
The tracking number is the only valid identifier for external shipment tracking, and its correct management reduces incidents, improves the customer experience, and protects data privacy.
| Point | Details |
|---|---|
| Unique carrier identifier | Only the carrier's tracking number allows a shipment to be traced on official external portals. |
| Generated when the label is created | The code becomes active from the moment the carrier prints the shipping label. |
| Different from the order number | The order number is internal; it never works as a locator on the carrier's portal. |
| Validate on the official portal | Aggregators may have delays; always check the website of the operator in custody of the package first. |
| ERP integration is key | Mapping the tracking number to a separate field in your ERP or store avoids support errors and improves communication. |
Manage all your tracking numbers from one place with Jetsend
Jetsend centralises shipment tracking for 13 carriers in a single dashboard, eliminating the need to access multiple portals to check each tracking number. From the same platform you can print labels, manage returns, and check the status of each shipment in real time. For businesses and entrepreneurs handling medium or high volumes, this centralisation reduces logistics management time and minimises support errors. If you are looking to simplify your transport operations, discover how Jetsend for businesses can transform the management of your shipments starting today.
Frequently asked questions
What exactly is a shipment tracking number?
The tracking number is the unique alphanumeric identifier that the carrier assigns to each package when generating the label. It is the only valid code for checking the shipment status on the operator's official portal.
Is the tracking number and the waybill number the same thing?
Yes, both terms refer to the same code. "Waybill number" is the common term in Spain and Latin America, while "tracking number" or "tracking code" are variants of the same concept used by different operators.
Why can't I find my shipment with the order number?
The order number is an internal identifier for your store or ERP and is not valid in the carrier's locator. To track a shipment you must use the tracking number that the operator, such as Correos, SEUR, or GLS, assigns when creating the label.
How long does it take for the tracking number to activate after creating the label?
The tracking number is registered in the carrier's system at the moment the label is generated, but active tracking begins when the courier scans the package at collection. This process can take anywhere from a few hours to one business day.
Can I use the same tracking number for a return?
No. Each shipment, including returns, receives its own tracking number. To correctly manage return tracking, always ask the carrier for the new tracking number associated with the return shipment.
