Ultimate EDI 855 PO Acknowledgment

Schema Reference

17 segments · X12 855 Purchase Order Acknowledgment

ISA01 Authorization Information Qualifier

M ID 2-2

ISA02 Authorization Information

M AN 10-10

ISA03 Security Information Qualifier

M ID 2-2

ISA04 Security Information

M AN 10-10

ISA05 Interchange ID Qualifier

M ID 2-2

ISA06 Interchange Sender ID

M AN 15-15

ISA07 Interchange ID Qualifier

M ID 2-2

ISA08 Interchange Receiver ID

M AN 15-15

ISA09 Interchange Date

M DT 6-6

ISA10 Interchange Time

M TM 4-4

ISA11 Interchange Control Standards Identifier

M ID 1-1

ISA12 Interchange Control Version Number

M ID 5-5

ISA13 Interchange Control Number

M N0 9-9

ISA14 Acknowledgment Requested

M ID 1-1

ISA15 Usage Indicator

M ID 1-1

GS01 Functional Identifier Code

M ID 2-2

GS02 Application Sender's Code

M AN 2-15

GS03 Application Receiver's Code

M AN 2-15

GS04 Date

M DT 8-8

GS05 Time

M TM 4-8

GS06 Group Control Number

M N0 1-9

GS07 Responsible Agency Code

M ID 1-2

GS08 Version / Release / Industry Identifier Code

M AN 1-12

ST01 Transaction Set Identifier Code

M ID 3-3

ST02 Transaction Set Control Number

M AN 4-9

BAK01 Transaction Set Purpose Code

M ID 2-2

BAK02 Acknowledgment Type

M ID 2-2

BAK03 Purchase Order Number

M AN 1-22

BAK04 Date

M DT 8-8

BAK08 Reference Identification

O AN 1-30

FOB01 Shipment Method of Payment

M ID 2-2

SAC Loop Repeat: 25

SAC01 Allowance or Charge Indicator

M ID 1-1

SAC02 Service, Promotion, Allowance, or Charge Code

C ID 4-4

SAC05 Amount

O N2 1-15

DTM01 Date/Time Qualifier

M ID 3-3

DTM02 Date

C DT 8-8

TD504 Transportation Method/Type Code

C ID 1-2

N1 Loop Repeat: 200

N101 Entity Identifier Code

M ID 2-3

N102 Name

C AN 1-60

N103 Identification Code Qualifier

C ID 1-2

N104 Identification Code

C AN 2-80

N301 Address Information

M AN 1-55

N401 City Name

O AN 2-30

N402 State or Province Code

O ID 2-2

N403 Postal Code

O ID 3-15

PO1 Loop Repeat: 100,000

PO101 Assigned Identification

O AN 1-20

PO102 Quantity Ordered

C R 1-15

PO103 Unit or Basis for Measurement Code

O ID 2-2

PO104 Unit Price

C R 1-17

PO106 Product/Service ID Qualifier

C ID 2-2

PO107 Product/Service ID

C AN 1-48

PID Loop Repeat: 1,000

PID01 Item Description Type

M ID 1-1

PID05 Description

C AN 1-80

SAC Loop Repeat: 25

SAC01 Allowance or Charge Indicator

M ID 1-1

SAC02 Service, Promotion, Allowance, or Charge Code

C ID 4-4

SAC05 Amount

O N2 1-15

CTT Loop Repeat: 1

CTT01 Number of Line Items

M N0 1-6

CTT02 Hash Total

O R 1-10

CTT03 Weight

C R 1-10

CTT04 Unit or Basis for Measurement Code

C ID 2-2

AMT02 Monetary Amount

M R 1-18

SE01 Number of Included Segments

M N0 1-10

SE02 Transaction Set Control Number

M AN 4-9

Automating Ultimate EDI 855

Stacksync validates, transforms, and delivers your 855 transactions automatically — so your team can focus on operations, not EDI compliance.

Validate

Transform

Route

Monitor

Stacksync generates and sends 855 Purchase Order Acknowledgments automatically when your system confirms an order. Accept, reject, or modify line items through your ERP — Stacksync handles the EDI formatting and transmission.

Ultimate EDI 855 FAQ

Common questions about 855 Purchase Order Acknowledgment transactions with Ultimate.

How long does it take to set up Ultimate EDI with Stacksync?

Most suppliers are fully connected and processing live Ultimate 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.

Do I need an existing VAN or AS2 connection to trade with Ultimate?

No. Stacksync handles the entire EDI transport layer. We connect directly to Ultimate's trading partner network through our certified connections. You don't need to manage a separate VAN subscription, AS2 certificates, or SFTP configurations.

How does Stacksync help with Ultimate 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 EDI document types does Stacksync support for Ultimate?

Stacksync supports all EDI document types required by Ultimate — 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 I connect Ultimate 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 Ultimate's EDI network and your system in real time.

What happens when Ultimate updates their EDI specifications?

Stacksync monitors Ultimate'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.