Introduction to IUID

IUID is a system of marking items delivered to the Department of Defense (DOD) with unique item identifiers, encoded in machine-readable symbologies and distinguishing an item from all other like and unlike items. The IUID program is a foundation for enabling DOD to achieve improved readiness, Total Asset Visibility (TAV), improved life cycle item management, and improved accountability.

A Unique Item Identifier (UII) is a set of data marked on items that is globally unique, unambiguous, and robust enough to ensure data information quality throughout life and that supports multi-faceted business applications and users. Eventually, the use of the UII will functionally replace the use of serial numbers.

DOD requires that items meeting specified criteria be marked with a UII prior to delivery to the government (there are a few exceptions). The criteria mandating IUID are in the process of significant change. A revised DODI 8320.04, released in September 2015, states the new criteria; AR 700-145 was revised in February 2016; revision of DFARS 211.274-2 will follow. A new and consistent interim Army Serialized Item Management Policy was published in May 2016.

For items serialized within an enterprise, a UII is derived by concatenating the enterprise identifier and the serial number. For items serialized within a part number, the UII is derived by concatenating the enterprise identifier, part number, and serial number. Each item that requires a UII is required to be marked, as a minimum, using a two dimensional (2D) Data Matrix Error Correction Code (ECC) 200 symbol applied in a way that will ensure that the daya from which the UII is derived remains marked for the entire life cycle of the item.

It is important to differentiate between the UII and the medium that carries the UII. The UII is data. The data matrix symbol is one of many automatic identification technologies that can be used to carry that data. A data matrix is not a UII and a UII is not a data matrix.

If you need assistance with writing an IUID Implementation Plan or language pertaining to IUID in a Statement of Work, we can help.

AMIS is the Army's Center of Excellence for the automatic reading technologies that are an integral part of the implementation of IUID. It supports its DOD customers with AIT marking and reading equipment, devices, supplies, and technical assistance.

IUID Implementation Planning Overview

Composing an effective IUID implementation plan can be a challenge, but use of the IUID Implementation Planning template in LDAC's Systems-Planning-and-Requirements-Software (SYSPARS) is a good way of ensuring that the plan covers all of the necessary bases and is consistent with the requirements of AR 700-145.

We recommend that you begin by viewing the "Essential Information for Planners" briefing.

We have found that most IUID implementation plans submitted to AMIS for coordination fail to adequately address mark quality assurance (that includes both the mark on the item and the mark on the packaging). Be sure that your plan explains how the government is going to check that item and packaging marks are MIL-STD compliant.

Using SYSPARS Overview

Don't forget to read the document at the "Using SYSPARS" link which describes the use of SYSPARS as well as plan coordination requirements. Before installing SYSPARS you will need to apply for and receive a password from LDAC. Use the "Download SYSPARS" link to LDAC After installing SYSPARS, draft your plan and then save the SYSPARS formatted plan as a Microsoft Word document.

If you run into a problem, feel free to contact us.

Mark Quality Assurance Overview

Items requiring IUID must be marked IAW MIL-STD-130 (latest version) and the DoD Guide to Uniquely Identifying Items. The packaging of items requiring IUID must be marked IAW MIL-STD-129 (latest version). After marking, marks are required to be both validated and verified. Records of validation and verification of a representative sample of marks should be retained to document compliance with the standards. DFARS 252.211-7003 requires mark verification and validation. Packaging marking is especially high risk for errors..

While validation and verification operations check that the physical characteristics of the mark is correct and the syntax and semantics used to encode data is correct, they do not check that the data that was encoded is correct. There have been numerous cases of the data encoded in the item mark not exactly matching the data reported in the Receiving Report module of iRAPT/WAWF or the human readable data on the item's data plate. Part numbers and serial numbers are especially vulnerable. Check them carefully.

Information for Suppliers of Items Requiring IUID Overview

The DFARS clause at 252.211-7003 is inserted into contracts to identify the items being acquired that require Item Unique Identification (IUID). If an end item or component is identified in that clause, or in an appropriate attachment, as requiring IUID, it does. If not so identified, it does not. Note that some program managers use a "candidate IUID" approach that results in the list of items requiring IUID being finalized after contract award. That approach usually requires a subsequent contract modification to amend the DFAR 252.211-7003 clause to capture all items requiring IUID.

Historically, the most frequent supplier mistakes involve incorrect marking and incorrect entry of IUID data into PIEE/WAWF. Marking of items is contractually required to conform to MIL-STD-130 (latest version) and marking of those items' packaging is contractually required to conform to MIL-STD-129 (latest version). The compliant item mark and the compliant packaging mark do not look the same and do not contain the same data. If they do, you did it wrong.

The requirement is to mark and to register. Entering IUID data into the UID Tab of the Receiving Report module of PIEE/WAWF is a point of risk. One of the most frequent mistakes is marking an item with one IUID construct and registering it as having been marked with a different construct.

Information for Use at Army Unit Level Overview

The US Army Materiel Command is the Army's executive agent for legacy item IUID marking, to include sustainment of marks (replacing marks that become missing or unreadable). Unit-level IUID-marking is authorized only as directed by AMC. Their SOP is found at the link. Pages 5-7 deal with mark replacement.

HQ AMC's IUID team may be contacted at

IUID and Serialized Item Management Overview

A primary driver of IUID is its use in Serialized Item Management (SIM). Army SIM policy is contained in Army Directive 2016-21. The policy in that directive will eventually be migrated to AR 710-3. If an item requires SIM, it requires IUID. Note that some items that do not require SIM may still be selected to receive IUID, IAW AR 700-145 and/or DFARS 211.274-2.