A carrier TMS runs the operation of whoever moves the freight: fleet, drivers, maintenance, fuel, payroll, and issuing CFDI with Carta Porte. A shipper TMS runs the operation of whoever pays: carrier assignment, tracking, proof of delivery, and invoice audit. Buying the wrong type is the most common TMS RFP mistake in Mexico.
They are different products for opposite sides of the same invoice. This guide helps you avoid evaluating dispatch software when your pain is accounts payable.
- bills vs pays freight
- 2 sides
- Carta Porte (carrier)
- Issues
- Carta Porte (shipper)
- Validates
- leakage when auditing 100%
- 5–7%
Cluster: Mexico TMS RFP · autonomous vs traditional TMS · fake digitization · how to audit an invoice.
Same invoice, two worlds
User
Carrier TMS: Line, owner-operator, private fleet
Shipper TMS: Shipper, importer, retail, 3PL
Core question
Carrier TMS: What does it cost to operate and what do I bill?
Shipper TMS: Am I paying the right amount for the right service?
Typical modules
Carrier TMS: Dispatch, fuel, maintenance, payroll, CPK
Shipper TMS: Assignment, control tower, POD, invoice audit
Carta Porte 3.1
Carrier TMS: Issues it
Shipper TMS: Validates it before paying
Mexico examples
Carrier TMS: LIS TMS, GM Transport, SYNC TMS, Troost
Shipper TMS: OCL Cargo
Success metric
Carrier TMS: Margin per trip, fleet utilization
Shipper TMS: Total freight cost, recovered leakage, OTIF
Why the confusion costs money
Directories and search mix both categories under “TMS,” so a shipper trying to control spend ends up evaluating fleet-dispatch software that does not help. Months into an RFP you discover the product issues Carta Porte but does not reconcile yours against rate and POD.
The right evaluation frame is the Mexico TMS RFP: 40 questions and the full TMS systems guide.
Signals you need a shipper TMS
If you recognize these four, stop evaluating fleet dispatch:
Elige un paso para ver el detalle
Detalle del paso · 01
You pay dozens of carriers
The third type: autonomous TMS
Inside shipper TMS there is a newer split: traditional products (screens your team feeds) and autonomous ones, where AI agents run assignment, tracking, delivery capture, and audit without capture clerks in the middle.
Full difference in autonomous TMS vs traditional TMS and why buying a TMS does not digitize freight if people still do it by hand.
Coexistence with private fleet and third parties
Shipper with partial fleet: fleet TMS for your units + shipper TMS for third-party spend. The second is usually where leakage lives (detention, accessorials, spot rates).
Architecture
Two sides, one spend
Private fleet
Dispatch TMS
Third parties
Shipper TMS
File
POD · GPS · CFDI
Pay
Pre-pay audit
How OCL fits (shipper side)
OCL Cargo is an autonomous TMS for whoever pays freight: audits CFDI + Carta Porte + GPS + POD before Finance pays; can stamp invoice and Carta Porte when applicable. Coexists with your TMS/ERP on day one. Pattern when auditing 100%: recover 5–7% of spend. Commercial reference: ~$50 MXN per shipment.
Audit method: how to audit a freight invoice. Path compare: in-house vs software vs BPO. Diagnostic: free diagnostic.
30-minute RFP checklist
Before requesting demos, answer these. The first “no” usually defines the product.
Elige un paso para ver el detalle
Detalle del paso · 01
Do you pay or bill freight?
Key takeaways5 points
- Carrier TMS runs fleet and billing; shipper TMS controls what you pay for freight. Different products.
- Buying the wrong side is the most common TMS RFP mistake in Mexico.
- If you pay dozens of carriers and your pain is the inbound invoice, you need the shipper side (audit, POD, tower).
- On the shipper side: traditional TMS (screens you feed) vs autonomous (agents that execute).
- OCL = autonomous shipper TMS: 100% pre-pay audit; can stamp; coexistence; 5–7% pattern; 6–8 week pilot.
Evaluating a TMS? Start with the invoice side
Related reading
Frequently asked questions
Enterprise suites try with modules for both sides, at enterprise cost and implementation time. In the mid-market Mexican market, products are specialized by side - buy them that way.
Both, integrated: a fleet TMS for your units and a shipper TMS for third-party spend - usually where leakage lives.
Share data yes (appointments, evidence, status); share the management system is not desirable: the party that audits should not run on the audited party’s system.
OCL Cargo is an autonomous shipper-side TMS: assignment, tower, POD, and pre-pay audit. It can stamp invoice and Carta Porte when applicable. It does not replace carrier fleet dispatch.
On the shipper side: agents execute work (assign, track, capture delivery, audit) without capture clerks. See autonomous vs traditional TMS and fake digitization.
Use the Mexico TMS RFP (40 questions) and the TMS systems guide. First RFP question: do you pay or bill freight?