# ISO/IEC 21471:2020 — Withdrawn and superseded ISO standards For ISO/IEC 21471:2020, item title is Information technology — Automatic identification and data capture techniques — Extended rectangular data matrix (DMRE) bar code symbology specification; status code is 9599; successor is ISO/IEC 21471:2025; withdrawn / published date is 2020-02-03, recorded from its source on 2026-08-05. - **Identifier:** ISO/IEC 21471:2020 _(verified: appears in the quote below)_ - **Item title:** Information technology — Automatic identification and data capture techniques — Extended rectangular data matrix (DMRE) bar code symbology specification _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO/IEC 21471:2025 - **Withdrawn / published date:** 2020-02-03 _(verified: appears in the quote below)_ ## What the source says > 70947,IS,,ISO/IEC 21471:2020,Information technology — Automatic identification and data capture techniques — Extended rectangular data matrix (DMRE) bar code symbology specification,Technologies de l'information – Techniques de l'identification et de saisie de données automatiques – Data Matrix Rectangulaire Etendu (DMRE) spécification de symbologie de code à barres,2020-02-03,1,['35.040.50'],ISO/IEC JTC 1/SC 31,9599,,[84783],['en'],72,"
This document defines the requirements for the symbology known as extended rectangular data matrix (DMRE). It specifies the DMRE code symbology characteristics, data character encodation, symbol formats, dimensions and print quality requirements, error cor ## Source - https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv Last verified: 2026-08-05. Review by: 2027-02-01. Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).