In today’s fast-moving world of logistics, precision is non-negotiable. A single error in your Standard Carrier Alpha Code® (SCAC®) can derail an entire shipment, trigger compliance issues, or even get your freight rejected outright. Whether you’re a seasoned carrier, a shipper, a third-party logistics provider (3PL), or a new entrant in the industry, understanding the most common SCAC pitfalls is essential to keeping your operations smooth and your reputation intact.

What Is a SCAC?

A SCAC is a unique two-to-four-letter code assigned by the National Motor Freight Traffic Association, Inc. (NMFTA)™ to identify transportation companies. It’s used in shipping documents, electronic data interchange (EDI), and by government agencies like U.S. Customs and Border Protection. Without a valid SCAC, your freight may never make it past the gate.

The Top 5 SCAC Mistakes

1. Incorrect Code Entry

• Mistake: Typing errors, outdated codes, or entering the wrong carrier code.
• Impact: Misrouted shipments, billing errors, and rejected documentation.
• Fix: Always verify using NMFTA’s official SCAC Online Subscription tool for verification.

2. Using Expired or Inactive Codes

• Mistake: Continuing to use a SCAC that’s no longer valid.
• Impact: Compliance violations and invalid shipping documents.
• Fix: Regularly check your SCAC status with NMFTA and set alerts for expiration and renewal.

3. Inconsistent Formatting

• Mistake: Using lowercase letters, adding extra spaces, or including special characters.
• Impact: EDI failures and automated system rejections.
• Fix: Standardize formatting and train teams to follow naming conventions.

4. Mismatch Between Carrier and SCAC

• Mistake: Using a SCAC that doesn’t match the actual carrier.
• Impact: Legal complications, fraud risk, and shipment holds.
• Fix: Cross-reference carrier documentation before submission and train staff on verification.

5. Failure to Register with AES

• Mistake: Not entering a new SCAC into the Automated Export System (AES).
• Impact: Rejected exports and customs delays.
• Fix: Submit your SCAC updates to AES immediately with NMFTA documentation.

How to Prevent SCAC Errors

• Maintain a centralized, up-to-date carrier database.
• Invest in NMFTA’s SCAC Online Subscription to verify codes.
• Conduct quarterly audits of SCAC codes.
• Subscribe to NMFTA updates and renewal reminders.
• Train staff on SCAC compliance and documentation accuracy.

Final Thoughts

A SCAC may seem like a small detail, but they carry big consequences. Avoiding these common mistakes can save you time, money, and headaches. In logistics, accuracy isn’t optional—it’s your ticket to reliability and trust.

Take the Next Step

Stay ahead of SCAC compliance with the authority that created it. NMFTA’s SCAC Online Subscription provides real-time verification tools, expiration alerts, and expert guidance so your shipments never get sidelined.

Subscribe to SCAC Online today at scaccode.com and keep your freight moving.

Frequently Asked Questions About SCAC Codes

What are the most common SCAC errors that delay freight shipments?
The most common errors include incorrect code entry, expired or inactive codes, inconsistent formatting, mismatched carrier and SCAC(s), and failure to register with the Automated Export System (AES). Each of these can lead to delays, rejected documentation, or compliance issues.

How do expired or inactive SCACs cause compliance problems?
If your SCAC is expired, shipping documents become invalid. This can result in regulatory violations, delayed shipments, or even penalties from customs and government agencies.

Why does a mismatched SCAC and carrier name lead to shipment rejections?
When the SCAC doesn’t match the actual carrier, it raises red flags for fraud and compliance risk. Many systems automatically reject mismatched documentation, which delays freight and complicates billing.

How can I verify if my SCAC is valid and up to date?
The most reliable way is through NMFTA’s SCAC Online Subscription, which provides real-time verification and alerts for upcoming expirations, which provides real-time verification and alerts for upcoming expirations.

What happens if a SCAC isn’t registered with AES?
Exports submitted without a valid SCAC in the AES will be rejected by U.S. Customs, leading to shipment delays and potential fines.

What tools are available to prevent SCAC compliance mistakes?
NMFTA offers the SCAC Online Subscription, which helps carriers, shippers, and 3PLs verify their SCAC(s), receive expiration alerts, and stay compliant across all documentation.