Resources
Learn EDI in plain language
Guides written for operators, not standards committees — the same explanations Signal uses inside the product.
Signal workspace
Validated, routed, acknowledged.
For the mandate on your desk
EDI requirements by retailer
What Whole Foods, Target, Kroger, and Amazon each actually require — kept current.
Surviving retailer chargebacks
The compliance-program mechanics behind penalties, and the windows that matter.
EDI error codes (AK905 and friends)
What rejections mean in English and how each one gets fixed.
Pharmaceutical & DSCSA
Pharmaceutical EDI explained
Wholesaler X12 for brands and specialty suppliers — the transaction sets you'll actually see.
DSCSA traceability readiness
The EPCIS boundary explained — what DSCSA requires and where EDI hands off.
Pharmaceutical wholesalers EDI
McKesson, Cardinal Health, Cencora — each wholesaler's requirements, kept current.
EDI 852 product activity reporting
Reporting inventory and sales activity to trading partners, segment by segment.
Pharmaceutical chargebacks (844/849)
Contract debits explained — how chargeback claims and disputes actually work.
Can't find your question?
The chat on every page answers EDI questions free — customer or not.