What is a Shipper’s Letter of Instruction (SLI)?
The Shipper’s Letter of Instruction (SLI) is a crucial document, often a PDF, detailing export shipment instructions from the shipper to the freight forwarder.
Definition and Purpose
A Shipper’s Letter of Instruction (SLI), frequently circulated as a PDF document, serves as a formal request to a freight forwarder to execute an export shipment on behalf of the shipper. It’s essentially a comprehensive set of instructions, authorizing the forwarder to prepare necessary documentation and handle the logistical aspects of the export process.

The primary purpose of the SLI is to provide clear and concise direction, minimizing errors and ensuring compliance with international shipping regulations. It details critical information like consignee details, the form of payment, and specific shipping instructions – such as the preferred carrier (“Ship Via”).
Furthermore, the SLI functions as a legal document, granting the forwarder the authority to act on the shipper’s behalf, including signing export documents. It also acknowledges the shipper’s understanding of cargo screening procedures and potential searches, as mandated by security regulations like those from Transport Canada and airlines.
The Role of the SLI in Exporting
The Shipper’s Letter of Instruction (SLI), often a completed PDF, is central to the exporting process, acting as the foundational communication between the shipper and the freight forwarder. It initiates the shipment by formally requesting the forwarder to manage the export logistics. Without a properly completed SLI, the forwarder lacks the authorization to proceed.
The SLI ensures a smooth transaction by outlining all necessary details, preventing delays caused by missing information. It dictates how goods are shipped (“Ship Via”) and how payment will be handled, impacting financial security.
Crucially, the SLI demonstrates the shipper’s awareness of security protocols, acknowledging potential cargo screening. It also authorizes the forwarder to prepare and sign export documentation, streamlining compliance. The SLI’s role extends to insurance requests, allowing shippers to protect their goods during transit, and defining liability in case of issues.

Key Components of a Shipper’s Letter of Instruction PDF
A standard SLI PDF includes shipper details, consignee/notify party information, a buyer reference number, and an export declaration number for tracking.
Shipper Information
The Shipper Information section within the SLI PDF is foundational, requiring precise details about the exporting party. This typically includes the complete legal name of the shipper, their full address – encompassing street address, city, state/province, and postal code – and accurate contact information. A dedicated “Shipper’s Ref. No.” field allows exporters to assign and track their own internal reference numbers for the shipment, streamlining internal record-keeping and correspondence.
Providing a reliable phone number and email address is essential for swift communication regarding any shipment-related queries or issues. Accuracy in this section is paramount, as any discrepancies can lead to delays, misdirected shipments, or complications with customs clearance. The shipper’s details establish responsibility and facilitate smooth processing throughout the export journey, ensuring a clear point of contact for all involved parties.
Consignee and Notify Party Details

The Consignee and Notify Party section of the SLI PDF outlines the ultimate recipient of the goods and the party to be notified upon arrival. The Consignee details – legal name, full address, and contact information – are critical for delivery and customs procedures in the destination country. A separate field is dedicated to the “Notify Party,” which is used if someone other than the consignee should receive shipment notifications, such as a customs broker or a forwarding agent.
If the consignee is the notify party, this field can often be left blank or marked “same as consignee.” Accurate details for both parties are vital to prevent delays and ensure smooth delivery. Incorrect information can lead to shipments being held at customs or misrouted, incurring additional costs and frustrating the import process. Clear and complete details in this section are fundamental for successful international trade.
Buyer Reference Number
The Buyer Reference Number, prominently featured on the Shipper’s Letter of Instruction (SLI) PDF, serves as a crucial internal tracking mechanism for the buyer or purchaser of the goods. This number, assigned by the buyer, allows them to easily reconcile the shipment with their purchase orders, invoices, and accounting systems. It’s a key element for matching the physical goods received with the corresponding financial transactions.
Including this reference number on the SLI streamlines communication and minimizes discrepancies between the shipper, freight forwarder, and the ultimate buyer. It facilitates efficient tracking and problem resolution should any issues arise during transit. While not directly impacting customs clearance, the buyer reference number is invaluable for internal control and audit trails, ensuring accurate record-keeping and financial accountability throughout the entire supply chain process.
Export Declaration Number
The Export Declaration Number, often found on the Shipper’s Letter of Instruction (SLI) PDF, represents a unique identifier assigned by the relevant government agency when an export shipment is formally declared. This number is particularly important for shipments requiring formal export declarations, typically those exceeding certain value thresholds or involving specific controlled goods. It signifies that the necessary regulatory requirements have been met and acknowledged by customs authorities.
Including this number on the SLI ensures traceability and facilitates smooth customs clearance processes. It allows customs officials to quickly access detailed information about the shipment, verifying compliance with export regulations. While not always required for all shipments, its presence demonstrates proactive adherence to legal obligations. The Export Declaration Number is a critical component for maintaining accurate export records and supporting potential audits or investigations.

Detailed Instructions within the SLI
The SLI PDF contains vital shipping instructions, payment forms, and insurance requests, guiding the freight forwarder to execute the export process correctly and efficiently.
Shipping Instructions (Ship Via)
Within the Shipper’s Letter of Instruction (SLI) PDF, the “Ship Via” section is paramount, providing explicit direction to the forwarding agent regarding the preferred transportation method. This instruction dictates how the goods should be moved, encompassing options like air, sea, road, or rail transport, or a combination thereof.
It’s crucial to note that the SLI often includes a disclaimer stating that all goods may be carried by any means unless specifically contradicted by these instructions. Therefore, a clear and unambiguous “Ship Via” instruction is vital to prevent unintended routing. The shipper’s reference number, included on the SLI, aids in tracking and communication throughout the shipping process. Accurate completion of this section ensures the freight forwarder understands the shipper’s logistical preferences and can arrange transport accordingly, minimizing delays and potential complications.
Form of Payment Instructions

The Shipper’s Letter of Instruction (SLI) PDF prominently features a section dedicated to “Form of Payment.” This is a critical element, outlining how freight charges, duties, and taxes will be settled. If no specific payment method is indicated within the SLI, the shipper assumes full liability for all associated charges.
Common payment terms detailed in the SLI include prepaid, collect, or a specified account number for billing. Clear instructions prevent disputes and ensure timely payment to the carrier and other involved parties. The SLI serves as authorization for the freight forwarder to proceed with shipment, contingent upon agreed-upon payment terms. Accurate and complete payment information within the SLI PDF streamlines the financial aspect of the export process, fostering a smooth and efficient transaction for all stakeholders involved.
Insurance Requests and Coverage
Within the Shipper’s Letter of Instruction (SLI) PDF, a dedicated section addresses insurance requirements for the exported goods. Shippers can explicitly request insurance coverage, specifying the desired amount. However, it’s crucial to understand that recovery under insurance is typically limited to the declared value.
The SLI clarifies that if the shipper desires comprehensive financial protection, purchasing all-risk insurance coverage is highly recommended. This ensures full coverage against potential loss or damage during transit. The document often states that if insurance is requested, the shipment is insured to the indicated amount. The shipper’s decision regarding insurance is documented within the SLI PDF, providing a clear record of their risk management approach and financial responsibility for the goods during the export process.

Legal and Compliance Aspects
The SLI PDF authorizes the freight forwarder to prepare export documents and act on the shipper’s behalf, adhering to security regulations and screening protocols.
Authorization for Document Preparation
The Shipper’s Letter of Instruction (SLI) PDF fundamentally serves as a legal authorization. It empowers the designated freight forwarder, like C.H. Robinson, to meticulously prepare all necessary export documentation. This includes, but isn’t limited to, the air waybill or bill of lading, commercial invoices, packing lists, and any certificates of origin required for the specific destination country.
Crucially, the SLI grants the forwarder the authority to sign these documents on behalf of the shipper. This delegation is vital for ensuring smooth customs clearance and compliance with international trade regulations. The shipper’s signature on the SLI effectively transfers this responsibility, streamlining the export process. It also allows the forwarder to accept documents related to the shipment, further solidifying their authorized role in managing the export logistics. This authorization is a cornerstone of the shipper-forwarder relationship.
Cargo Screening and Security Regulations
The Shipper’s Letter of Instruction (SLI) PDF acknowledges the shipper’s understanding and acceptance of mandatory cargo screening procedures. As part of Transport Canada and airline security regulations, all goods are subject to inspection. This means shipments may be opened and thoroughly searched in a secure location to ensure compliance with safety standards.
By signing the SLI, the shipper explicitly grants permission for these screenings. This consent is a critical component of international shipping protocols, designed to prevent the transport of prohibited items and maintain supply chain security. The shipper, or their authorized agent, confirms awareness that the shipment will undergo these checks. Companies like Ex-Freight Zeta require this acknowledgement to operate within legal frameworks, ensuring responsible and secure transportation of goods globally.
Shipper’s Authorization and Liability

The Shipper’s Letter of Instruction (SLI) PDF serves as formal authorization for the freight forwarder, such as C.H. Robinson Worldwide, Inc., to act on the shipper’s behalf. This includes preparing and signing all necessary export documentation related to the shipment. The shipper delegates the responsibility of handling these documents, effectively empowering the forwarder to manage the export process.
However, this authorization doesn’t absolve the shipper of all responsibility. If no specific form of payment is indicated on the SLI, the shipper remains financially liable for all associated charges. Understanding this liability is crucial. The shipper confirms they’ve provided accurate information and are accountable for any discrepancies. Essentially, the SLI is a legally binding document establishing the shipper’s consent and outlining their financial obligations throughout the export process.

Practical Considerations for Completing an SLI
Completing an SLI PDF requires meticulous accuracy; errors can cause delays or financial repercussions; Utilizing a PDF format streamlines sharing and ensures document integrity.
Importance of Accuracy
Accuracy within the Shipper’s Letter of Instruction (SLI) PDF is paramount to a smooth and compliant export process. Even seemingly minor discrepancies – in consignee details, declared values, or commodity descriptions – can trigger significant delays, costly penalties, or even rejection of the shipment by customs authorities.
Freight forwarders rely heavily on the information provided in the SLI to prepare necessary export documentation, such as the commercial invoice and export declaration. Incorrect data propagates through these documents, creating a ripple effect of errors; Furthermore, inaccurate information can lead to incorrect tariff classifications, resulting in overpayment or underpayment of duties and taxes.

The shipper is ultimately responsible for the accuracy of the SLI. Thoroughly reviewing all details before submitting the PDF is crucial. Double-checking names, addresses, product codes, and quantities minimizes the risk of errors and ensures a seamless international transaction. A commitment to precision safeguards against unforeseen complications and maintains positive relationships with logistics partners.
Using a PDF Format for SLIs
Employing a PDF (Portable Document Format) for the Shipper’s Letter of Instruction offers significant advantages in maintaining data integrity and ensuring consistent presentation. PDFs preserve the formatting and layout of the document across different operating systems and devices, preventing unintended alterations during transmission.
This format is ideal for sharing the SLI electronically with freight forwarders, customs brokers, and other parties involved in the export process. A PDF prevents accidental modifications to critical shipment details, safeguarding against errors that could lead to delays or penalties. Furthermore, PDFs can be digitally signed, providing an extra layer of security and authentication.
Many freight forwarders specifically request SLIs in PDF format due to its reliability and compatibility. Utilizing a standardized PDF template streamlines the process and reduces the likelihood of miscommunication. Ensuring the PDF is clearly labeled and easily accessible further enhances efficiency in international trade operations.
Where to Find SLI Templates
Locating a suitable Shipper’s Letter of Instruction (SLI) template is a straightforward process, with numerous resources available online. Many freight forwarding companies, like C.H. Robinson, provide downloadable SLI templates directly on their websites as a service to their clients. These templates are often tailored to their specific requirements and ensure compatibility.
Additionally, various trade organizations and government agencies offer generic SLI templates that can be adapted to individual needs. A quick internet search for “SLI template PDF” yields a wide range of options. It’s crucial to select a template that includes all the necessary fields for accurate export documentation.
When choosing a template, consider the complexity of your shipments and any specific requirements of the importing country. Customizing a pre-existing template is often more efficient than creating one from scratch, saving time and minimizing the risk of omissions.