Operations teams
“A supplier operations team can see partner setup, validation, exceptions, and QuickBooks handoff in one workspace instead of chasing spreadsheets.”
EDI error database
Fix EDI errors before they become partner rejects
Plain-English guides for common X12, ASN, invoice, envelope, and healthcare EDI failures — with steps to correct the file and prevent repeat exceptions.
Generalized public guidance
Built for urgent EDI troubleshooting searches
These pages explain error patterns without publishing customer payloads, PHI, support tickets, or tenant transaction logs. Use them to identify the likely segment, source-system field, and validation rule before retrying a partner exchange.
High-intent fixes
Common EDI errors teams search while blocked
856 ASN errors
Missing ship date on EDI 856
Understand a missing ship date on an EDI 856 advance ship notice: what it means, where it appears, how to fix it, and how SignalEDI validates ASNs before partner testing.
Read fix steps →
General validation errorsInvalid DTM segment
Learn why an invalid DTM date/time reference segment fails EDI validation, how to correct qualifiers and date formats, and how to prevent repeat DTM errors.
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General validation errorsInvalid GLN number
Understand invalid GLN errors in EDI trading-partner documents: where GLNs appear, why partner validators reject them, and how to correct location identifiers.
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810 invoice errorsDuplicate invoice number
Learn why an EDI 810 invoice is rejected for a duplicate invoice number, how to correct BIG02 and ERP invoice sequencing, and how to prevent repeat duplicate invoices.
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General validation errorsInvalid PO number
Understand invalid purchase-order number errors across EDI 850, 856, and 810 workflows, including PO reference fixes and prevention steps.
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General validation errorsMissing required segment
Learn what a missing required EDI segment means, how to identify the missing loop or segment, and how to prevent repeat validation failures.
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2 guides
856 ASN errors
EDI 856
Missing ship date on EDI 856
The ASN does not carry the shipment date a retailer or warehouse uses to match the ship notice to pickup, routing, receiving, and appointment windows.
EDI 856
HL hierarchy error
The ASN's hierarchical loops do not follow the structure the partner expects, such as shipment to order to pack to item.
1 guide
850 purchase-order errors
2 guides
810 invoice errors
EDI 810
Duplicate invoice number
The buyer has already received an invoice with the same invoice number for the supplier, purchase order, or billing relationship.
EDI 810
Missing TDS total
The invoice does not include the monetary total the buyer expects in the TDS segment, or the segment is present without the required amount.
1 guide
Healthcare EDI errors
2 guides
Envelope and control-number errors
EDI 850EDI 856EDI 810
ISA/IEA control number mismatch
The interchange trailer does not reference the same control number declared in the interchange header, so the envelope cannot be reconciled safely.
EDI 850EDI 856EDI 810
SE segment count mismatch
The transaction trailer declares a segment count that does not match the actual number of segments from ST through SE.
4 guides
General validation errors
EDI 850EDI 856EDI 810
Invalid DTM segment
A DTM segment has a missing qualifier, an invalid date value, or a date/time placement that does not match the partner's implementation guide.
EDI 850EDI 856EDI 810
Invalid GLN number
A Global Location Number used for a ship-to, bill-to, supplier, or facility identifier is missing, malformed, or not enrolled for the trading-partner relationship.
EDI 850EDI 856EDI 810
Invalid PO number
A purchase-order reference is missing, malformed, or does not match the buyer's original order in a downstream ASN, invoice, or acknowledgement.
EDI 850EDI 856EDI 810
Missing required segment
A segment required by the X12 transaction set or partner implementation guide is absent from the file or appears in the wrong loop.
Sandbox first
Validate before you resend
A retry does not fix a bad segment, stale control number, or missing business field. Validate the file, confirm the partner rule, then resend only when the correction is clear.
Trust & proof
Built for SMB teams that need API-first EDI, healthcare diligence, and predictable pricing.
SignalEDI keeps the public promise consistent across every route: real-time processing, transparent monthly plans, no per-document fees, QuickBooks-friendly handoffs, and core healthcare X12 workflows on paid plans.
HIPAA-aware handlingBAA path documentedSecure API + webhooksNo per-document fees
Healthcare billing
“837, 835, and 270/271 workflows are explained in plain English, with HIPAA-aware handling and a documented BAA review path for diligence.”
Developer teams
“JSON/CSV in and X12 out, with API docs, webhooks, real-time status, and validation responses that make EDI feel like modern infrastructure.”