Adopted by fast-scaling companies running mission-critical data in real time
Yes, we're fully connected to Gulf Relay
We support 1 document types required by Gulf Relay including:
Start trading with Gulf Relay in days – not weeks.
Stacksync handles the complexity of Gulf Relay EDI so your team doesn't have to. Connect your ERP, WMS, or database through a simple API — we translate, validate, and deliver every transaction automatically.
Why thousands of companies use Stacksync to manage EDI
From pre-built Gulf Relay mappings to real-time compliance checks, Stacksync removes the friction from EDI — so you can focus on growing your business.
Pre-connected to 10,000+ trading partners
Supports x12, EDIFACT, JSON, and more
Works seamlessly across leading ERPs and systems
Self-service configuration tools for business teams
No custom mapping. No middleware.
SOC 2 type II
ISO 27001
HIPAA BAA
GDPR
CCPA
DPF US, EU, UK, CH
CSA STAR
SOC 2 type II
ISO 27001
HIPAA BAA
GDPR
CCPA
DPF US, EU, UK, CH
CSA STAR
SSO & SCIM
Alerts
Secure connection options
Common questions about Gulf Relay EDI
Everything you need to know about setting up and managing Gulf Relay EDI transactions with Stacksync.
What is a Gulf Relay EDI 204 Motor Carrier Load Tender?
A Gulf Relay EDI 204 is an electronic request from a shipper or broker to a carrier to transport a load. It contains the pickup and delivery locations, commodity descriptions, weight, equipment requirements, and requested dates. Gulf Relay sends 204s to carriers in their network to tender freight for acceptance. The carrier responds with a 990 (Response to a Load Tender) to accept or decline. Stacksync processes Gulf Relay 204 tenders automatically, extracting shipment details and routing them to your TMS or dispatch system for immediate action by your operations team.
What is a Gulf Relay EDI 204 Motor Carrier Load Tender?
A Gulf Relay EDI 204 is an electronic request from a shipper or broker to a carrier to transport a load. It contains the pickup and delivery locations, commodity descriptions, weight, equipment requirements, and requested dates. Gulf Relay sends 204s to carriers in their network to tender freight for acceptance. The carrier responds with a 990 (Response to a Load Tender) to accept or decline. Stacksync processes Gulf Relay 204 tenders automatically, extracting shipment details and routing them to your TMS or dispatch system for immediate action by your operations team.
How long does it take to set up Gulf Relay EDI with Stacksync?
Most suppliers are fully connected and processing live Gulf Relay EDI transactions within 3–5 business days. Stacksync's no-code setup means you don't need developers or EDI consultants — configure your field mappings through our visual interface, run a test cycle, and go live.
How do carriers respond to a Gulf Relay EDI 204 Load Tender?
Carriers respond to a Gulf Relay 204 Load Tender with an EDI 990 (Response to a Load Tender). The 990 includes an acceptance or rejection code — carriers can accept the load as tendered, accept with modifications, or decline. Gulf Relay typically expects a 990 response within a specific timeframe (often 30 minutes to 2 hours). Failure to respond may result in the load being retendered to another carrier. Stacksync automates 990 responses based on your fleet capacity and dispatch rules, ensuring timely acceptance of profitable loads and automatic declination when capacity is full.
Do I need an existing VAN or AS2 connection to trade with Gulf Relay?
No. Stacksync handles the entire EDI transport layer. We connect directly to Gulf Relay's trading partner network through our certified connections. You don't need to manage a separate VAN subscription, AS2 certificates, or SFTP configurations.
How do carriers respond to a Gulf Relay EDI 204 Load Tender?
Carriers respond to a Gulf Relay 204 Load Tender with an EDI 990 (Response to a Load Tender). The 990 includes an acceptance or rejection code — carriers can accept the load as tendered, accept with modifications, or decline. Gulf Relay typically expects a 990 response within a specific timeframe (often 30 minutes to 2 hours). Failure to respond may result in the load being retendered to another carrier. Stacksync automates 990 responses based on your fleet capacity and dispatch rules, ensuring timely acceptance of profitable loads and automatic declination when capacity is full.
What is a SCAC code and why does Gulf Relay require it for EDI 204?
A SCAC (Standard Carrier Alpha Code) is a unique 2-to-4 letter identifier assigned by the National Motor Freight Traffic Association (NMFTA) to transportation carriers. Gulf Relay uses SCAC codes in EDI 204 tenders to identify the carrier being tendered the load, and carriers must include their SCAC in the 990 response and subsequent status updates (214). Without a valid SCAC, Gulf Relay's system cannot route the tender or track the shipment. Stacksync stores your SCAC code and automatically includes it in all outbound EDI documents, ensuring proper carrier identification across all Gulf Relay transactions.
How does Stacksync help with Gulf Relay compliance?
Stacksync improves compliance scores by eliminating manual processing delays. Purchase Orders sync to your system in real time, ASNs are generated automatically when you ship, and invoices are validated with three-way matching before submission. Real-time monitoring alerts you to issues before they become chargebacks.
What is a SCAC code and why does Gulf Relay require it for EDI 204?
A SCAC (Standard Carrier Alpha Code) is a unique 2-to-4 letter identifier assigned by the National Motor Freight Traffic Association (NMFTA) to transportation carriers. Gulf Relay uses SCAC codes in EDI 204 tenders to identify the carrier being tendered the load, and carriers must include their SCAC in the 990 response and subsequent status updates (214). Without a valid SCAC, Gulf Relay's system cannot route the tender or track the shipment. Stacksync stores your SCAC code and automatically includes it in all outbound EDI documents, ensuring proper carrier identification across all Gulf Relay transactions.
What EDI document types does Stacksync support for Gulf Relay?
Stacksync supports all EDI document types required by Gulf Relay — including Purchase Orders (850), Invoices (810), ASNs (856), PO Acknowledgments (855), and more. Our platform handles the full lifecycle from order to payment automatically.
Can Gulf Relay EDI 204 handle multi-stop shipments?
Yes, Gulf Relay EDI 204 supports multi-stop shipments through multiple S5 (Stop Off Details) segments. Each stop includes the facility address, stop type (pickup or delivery), scheduled date and time window, and the specific freight being handled at that location. The stops are sequenced to define the route order. Stacksync maps multi-stop Gulf Relay 204 tenders into your TMS routing system, creating individual stop records with proper sequencing so your dispatch team sees the complete route plan without manually parsing the EDI document.
Can Gulf Relay EDI 204 handle multi-stop shipments?
Yes, Gulf Relay EDI 204 supports multi-stop shipments through multiple S5 (Stop Off Details) segments. Each stop includes the facility address, stop type (pickup or delivery), scheduled date and time window, and the specific freight being handled at that location. The stops are sequenced to define the route order. Stacksync maps multi-stop Gulf Relay 204 tenders into your TMS routing system, creating individual stop records with proper sequencing so your dispatch team sees the complete route plan without manually parsing the EDI document.
How does Stacksync automate Gulf Relay EDI 204 load tender processing?
Stacksync connects to your TMS or dispatch system and processes incoming Gulf Relay 204 tenders in real time. When a tender arrives, Stacksync extracts the shipment details — origin, destination, commodity, weight, equipment type, and pickup/delivery windows — and creates a load record in your system. Based on your capacity rules and lane preferences, Stacksync can auto-accept loads with a 990 response or route them to your dispatch queue for manual review. The platform tracks tender acceptance rates and response times to help you maintain preferred carrier status with Gulf Relay.
How does Stacksync automate Gulf Relay EDI 204 load tender processing?
Stacksync connects to your TMS or dispatch system and processes incoming Gulf Relay 204 tenders in real time. When a tender arrives, Stacksync extracts the shipment details — origin, destination, commodity, weight, equipment type, and pickup/delivery windows — and creates a load record in your system. Based on your capacity rules and lane preferences, Stacksync can auto-accept loads with a 990 response or route them to your dispatch queue for manual review. The platform tracks tender acceptance rates and response times to help you maintain preferred carrier status with Gulf Relay.
Can I connect Gulf Relay EDI to my existing ERP or WMS?
Yes. Stacksync integrates with any system that has a database or API — including SAP, Oracle, NetSuite, Microsoft Dynamics, and custom-built ERPs. Data flows bidirectionally between Gulf Relay's EDI network and your system in real time.
What happens when Gulf Relay updates their EDI specifications?
Stacksync monitors Gulf Relay's EDI spec changes and updates our mappings proactively. When a change affects your integration, we notify you and apply updates — so you stay compliant without scrambling to decode new implementation guides.






