Telecom and Media integration
AT&T supplier EDI integration
A guide for suppliers connecting with AT&T, covering order-cycle documents, invoice matching and ERP integration.
Overview
Understanding AT&T integration
Who this is for: Equipment, device, accessory and materials suppliers selling to AT&T.
AT&T buys network equipment, devices, accessories and materials from many suppliers and exchanges order-cycle documents with them electronically. Third-party catalogs list AT&T documents including purchase orders, purchase order acknowledgments, advance ship notices, invoices, application advice and routing instructions.
Invoice accuracy is a recurring theme. Third-party sources describe AT&T expecting invoices to reference the original purchase order exactly and to align with the order and the ship notice, with line-item detail such as quantities and unit prices. When invoices do not match, payment can be delayed.
AT&T's official specifications are provided to suppliers directly, and third-party guide publishers advise contacting AT&T for them. Suppliers should confirm the document set and versions for their relationship, and note that some catalogs list separate legacy and current AT&T identifiers.
Workflows
Typical AT&T business workflows
AT&T order cycle
- 1Receive 850 purchase order
- 2Send 855 acknowledgment
- 3Send 856 ship notice
- 4Send 810 invoice
- 5Review 824 application advice
Documents and APIs
Common AT&T transactions
Documents commonly exchanged with AT&T, based on the public sources listed below. Exact requirements depend on your program, so always confirm against AT&T's current implementation guide.
| Document | Name | Direction | Purpose |
|---|---|---|---|
| 850 | Purchase Order | From AT&T | AT&T orders products from suppliers. |
| 855 | Purchase Order Acknowledgment | To AT&T | The supplier confirms the order. |
| 856 | Advance Ship Notice | To AT&T | Describes each shipment. |
| 810 | Invoice | To AT&T | Bills AT&T and must align with the order and shipment. |
| 824 | Application Advice | From AT&T | Reports errors in submitted documents. |
| 754 | Routing Instructions | From AT&T | Provides shipment routing where used. |
Connectivity
How companies connect
EDI per AT&T specifications
Suppliers exchange documents according to specifications provided by AT&T.
Current and legacy identifiers
Third-party catalogs list separate current and legacy AT&T identifiers to confirm before setup.
Challenges
Common integration challenges
Three-way matching
Invoices must align with the purchase order and ship notice to avoid payment delays.
Acting on application advice
Errors reported on 824 documents need prompt correction.
Obtaining official specifications
Specifications come from AT&T directly, so onboarding depends on AT&T contacts.
How ECOM helps
How ECOM can support your AT&T integration
Telecom and Media
See how ECOM supports telecom supply chains.
SolutionEDI Integration
Integrate AT&T documents with your ERP and warehouse.
ProductPRISM-SCV
Monitor invoice matches and application advice for AT&T orders.
ERP integration options
ECOM integrates AT&T order-cycle documents with your ERP so invoices reference the original order exactly and errors reach the right team quickly.
Visibility and exception management
PRISM-SCV, ECOM's supply chain visibility product, is designed to follow each AT&T document from receipt to response and flag late or missing documents and mismatches, so your team can resolve exceptions before they affect the relationship.
Explore PRISM-SCVAT&T integration FAQs
Which EDI documents does AT&T use with suppliers?
Third-party catalogs list the 850, 855, 856, 810, 824 and 754, among others. Confirm the set with AT&T.
Why do AT&T invoices get rejected?
Common causes include purchase order references that do not match exactly and invoices that do not align with the order and ship notice.
Where do suppliers get AT&T specifications?
Directly from AT&T. Third-party guide publishers recommend contacting AT&T for official specifications.
Is ECOM an AT&T partner?
This page is an integration guide and does not indicate a partnership with AT&T. ECOM builds integrations to published requirements.
Sources and accuracy
This guide summarizes publicly available information as of October 2026. AT&T sets its own requirements and can change them at any time; your AT&T implementation guide, supplier portal or account contact is the authoritative source for your program.
- Stacksync, AT&T EDI Third-party source
- Stedi, AT&T purchase order guide Third-party source
AT&T is a trademark of its owner. Its mention does not imply endorsement of, or a partnership with, ECOM Specialist.
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