The Marine Corps Exchange (MCX) 855 Purchase Order Acknowledgment, explained

What Marine Corps Exchange (MCX) expects in the 855

Marine Corps Exchange (MCX) trades on X12 4010 over VAN. Marine Corps Exchange (MCX)'s 855 follows the standard X12 layout — no partner-specific companion-guide quirks are curated for this document yet. The certified base map covers the standard requirements, and validation still runs against the 855 spec before anything transmits.

How EDISQ maps it

The certified Marine Corps Exchange (MCX) 855 map loads when you enable the partner — fields auto-map from NetSuite, QuickBooks, Dynamics, and 33 other systems, validation runs against Marine Corps Exchange (MCX)'s spec before transmission, and the sandbox replays Marine Corps Exchange (MCX) test scenarios until everything passes.

Common rejection reasons

Nearly all 855 rejections trace to reference data, not syntax: identifiers that don't match Marine Corps Exchange (MCX)'s cross-references, echoed fields dropped from the original PO, or timing that misses the program window. EDISQ flags each before Marine Corps Exchange (MCX) ever sees the document.

Sample Marine Corps Exchange (MCX) 855

A representative 855 interchange addressed to Marine Corps Exchange (MCX) — envelope, body segments, and control totals:

1ISA*00*          *00*          *ZZ*ACMESUPPLY     *ZZ*MARINECORPSEXCH*260101*1200*U*00401*000000001*0*P*>~
2GS*PR*ACMESUPPLY*MARINECORPSEXCH*20260101*1200*1*X*004010~
3ST*855*0001~
4BAK*00*AC*PO12345*20260101~
5PO1*1*24*EA*9.75**UP*012345678905~
6ACK*IA*24*EA~
7PO1*2*12*EA*14.50**UP*012345678912~
8ACK*IA*12*EA~
9CTT*2~
10SE*8*0001~
11GE*1*1~
12IEA*1*000000001~

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