Blocking findingAMZ_SSCC_INVALIDgs1

Amazon ASN SSCC length or check digit is invalid

The container identifier does not normalize to a valid 18-digit GS1 SSCC.

Fix

Make the source change, then revalidate

Confirm the 17-digit body, recalculate the GS1 check digit, and compare the transmitted value with a scan of the printed label.

What to inspect

Open the exact location reported by the validator. Confirm the source mapping or warehouse value rather than editing the outbound document as a one-off.

How to prevent recurrence

Add the rejected file as a sanitized regression fixture. Keep the expected finding code stable so mapping changes cannot silently reintroduce it.

Run this rule against your payload

Reviewed 2026-07-16 · Rule pack 2026.07.16 · Current account documentation remains controlling.