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Shipment Sentry
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Operational EDI reference

ASN Purchase Order Mismatch: Compare 850 BEG03 and 856 PRF01

Block an ASN when its purchase-order reference does not match the source 850 selected for the shipment.

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Direct answer

Direct answer

For a common 850-to-856 workflow, BEG03 identifies the purchase order and PRF01 references it from the ASN order loop. A different value can send valid shipment data against the wrong order. Compare normalized values before release, show both references in the finding, and require the operator to select the correct source order rather than editing evidence after validation.

Why a parser is not enough

The useful unit is not a file that parses; it is a business document with a known decision, an owner, a source trail and a matched downstream response. This page connects the technical structure to that operating workflow.

What the control should check

  1. 01Extract BEG03 from the source 850.
  2. 02Extract every relevant PRF01 from the 856.
  3. 03Compare within the correct order hierarchy.
  4. 04Block a different or missing required reference.
  5. 05Retain the reconciliation result with the release decision.

Working example

850 BEG03 PO-77821 ≠ 856 PRF01 PO-77812 → PO_NUMBER_MISMATCH

The excerpt is intentionally compact. Use the working validator or authenticated gateway with the complete interchange to obtain a decision.

Failure modes worth catching

  • A transport receipt is mistaken for business acceptance.
  • Control identifiers are regenerated between validation and submission.
  • A warning has no owner and becomes a recurring manual investigation.
  • The document is checked alone even though the truth exists in a purchase order, label or acknowledgement.

Put it into the dispatch workflow

  1. 1Validate the source document before transport.
  2. 2Block deterministic failures and assign every review item.
  3. 3Release with a recorded owner and timestamp.
  4. 4Match functional and application acknowledgements.
  5. 5Reconcile confirmed outcomes back into fixtures and rules.
Use batch validation and acknowledgement tracking

Questions

Implementation answers

Does Shipment Sentry replace my EDI provider?

No. It sits before the existing transport as a validation and evidence sidecar.

What does cleared mean?

The document has no blocking finding in the current rule pack. It is not a guarantee of trading-partner or receiving acceptance.

How are repeat requests kept safe?

The API requires an idempotency key, stores only a token hash, scopes every record to one workspace and rejects reuse with different content.

Sources and limits

Reviewed 2026-07-18. Public references cannot establish every partner-specific rule. Current implementation guides and agreements remain controlling.

Keep investigating

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