X12
Outbound

White Cap X12 855 Purchase Order Acknowledgment

All Business Units
The EDI 855 confirms receipt and acceptance of a White Cap Purchase Order. Suppliers must respond promptly indicating whether the order is accepted, rejected, or accepted with changes to maintain compliance standing.
15segments
5loops
5mandatory

Schema Reference

15 segments · X12 855 Purchase Order Acknowledgment

ISA ISA Interchange Control Header
Mandatory Max: 1
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
GS GS Functional Group Header
Mandatory Max: 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
ST Transaction Set Header
Mandatory Max: 1
ST01 Transaction Set Identifier Code
M ID 3-3
ST02 Transaction Set Control Number
M AN 4-9
BAK Beginning Segment for Purchase Order Acknowledgment
Mandatory Max: 1
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
BAK05 Release Number
O AN 1-30
REF Reference Identification
REF01 Reference Identification Qualifier
M ID 2-3
REF02 Reference Identification
C AN 1-30
DTM Date/Time Reference
Optional Max: 10
DTM01 Date/Time Qualifier
M ID 3-3
DTM02 Date
C DT 8-8
TD5 Carrier Details (Routing Sequence/Transit Time)
Optional Max: 12
TD502 Identification Code Qualifier
C ID 1-2
TD503 Identification Code
C AN 2-80
TD505 Routing
C AN 1-35
N1 Loop Repeat: 200
N1 Name
Optional Max: 1
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
N3 Address Information
Optional Max: 2
N301 Address Information
M AN 1-55
N302 Address Information
O AN 1-55
N4 Geographic Location
Optional Max: 1
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
PO1 Baseline Item Data
Optional Max: 1
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
PO108 Product/Service ID Qualifier
C ID 2-2
PO109 Product/Service ID
C AN 1-48
PO110 Product/Service ID Qualifier
C ID 2-2
PO111 Product/Service ID
C AN 1-48
PID Loop Repeat: 1,000
PID Product/Item Description
Optional Max: 1
PID01 Item Description Type
M ID 1-1
PID05 Description
C AN 1-80
ACK Loop Repeat: 104
ACK Line Item Acknowledgment
Optional Max: 1
ACK01 Line Item Status Code
M ID 2-2
ACK02 Quantity
C R 1-15
ACK03 Unit or Basis for Measurement Code
C ID 2-2
ACK04 Date/Time Qualifier
O ID 3-3
ACK05 Date
C DT 8-8
CTT Loop Repeat: 1
CTT Transaction Totals
Optional Max: 1
CTT01 Number of Line Items
M N0 1-6
CTT02 Hash Total
O R 1-10
SE Transaction Set Trailer
Mandatory Max: 1
SE01 Number of Included Segments
M N0 1-10
SE02 Transaction Set Control Number
M AN 4-9
How It Works

Automating White Cap 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.

White Cap EDI 855 FAQ

Common questions about 855 Purchase Order Acknowledgment transactions with White Cap.

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

Most suppliers are fully connected and processing live White Cap 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 long does it take to set up White Cap EDI with Stacksync?

Most suppliers are fully connected and processing live White Cap 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.

Ready to automate White Cap EDI?

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POC from integration engineers
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No-code EDI setup
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Real-time compliance monitoring
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White-glove onboarding