--- title: "Understanding Blockchain QR Code Locking in iTraceiT: Why It Matters & How to Proceed" description: In the world of traceability and supply chain security, immutability is key. iTraceiT leverages blockchain technology to ensure absolute data integrity by making QR codes permanent and tamper-proof once exported --- [Skip to content](https://support.itraceit.io/en/understanding-blockchain-qr-code-locking-in-itraceit-why-it-matters-how-to-proceed#main-content) English Show submenu for translations [![itraceit](https://support.itraceit.io/hs-fs/hubfs/itraceit-slogan.png?height=50&name=itraceit-slogan.png)](https://itraceit.io/?hsLang=en) Open main navigation Close main navigation - English Show submenu for translations - [Log to my account](https://europe-workflow.itraceit.io/) [Log to my account](https://europe-workflow.itraceit.io/) How can we help you? - There are no suggestions because the search field is empty. 1. [iTraceiT](https://support.itraceit.io/en?hsLang=en) 2. [Data Privacy & Compliance](https://support.itraceit.io/en/data-privacy-compliance?hsLang=en) # Understanding Blockchain QR Code Locking in iTraceiT: Why It Matters & How to Proceed ## In the world of traceability and supply chain security, immutability is key. iTraceiT leverages blockchain technology to ensure absolute data integrity by making QR codes permanent and tamper-proof once exported If you’ve encountered a **“Parcel is Locked”** message, this article will help you understand why and guide you on the best approach to move forward. While this guarantees **trust and compliance**, it also means that modifications, such as merging or splitting parcels, are no longer possible after export. ### **Why is My QR Code Locked?** A QR Code in iTraceiT becomes **locked** when it is exported to the blockchain. This is not an error, it is a **security feature** designed to protect your parcel’s traceability. Once recorded, the blockchain ensures: - **Authenticity** – No unauthorized modifications can occur. - **Regulatory Compliance** – Meets industry standards for secure data storage. - **Supply Chain Transparency** – Ensures all stakeholders have access to verified, unaltered records. ### **What You Can Do Before Exporting** Before exporting a QR Code to the blockchain, you can: ✅ **Edit** parcel details ✅ **Split or merge** parcels ✅ **Make corrections or adjustments** However, **after export, no modifications are possible**. Any attempt to alter the QR Code will result in a **“Parcel is Locked”** message. ### **How to Proceed If You Need Changes** If you require modifications after export, consider the following options: - **Verify Status in iTraceiT** – If the QR Code is still being processed and has **not yet been written to the blockchain**, you may be able to **recall it** and correct the data. - **Contact Support Immediately** – If the QR Code is in transit but not yet finalized, our team might be able to **intercept and cancel** the blockchain export. - **Generate a New QR Code** – If the QR Code has already been exported, the only solution is to **create a new one** with the correct information. To avoid complications, we strongly recommend verifying all data before initiating the blockchain export.   Blockchain-powered QR codes in iTraceiT provide **unmatched security and transparency**, ensuring that parcel records remain **unchangeable and verifiable**. While this means that edits are impossible after export, planning ahead and leveraging iTraceiT’s pre-export features allow for **seamless and error-free traceability**. By understanding and applying these principles, you can **maximize the benefits of blockchain traceability while ensuring compliance and efficiency** in your supply chain. - [Getting Started](https://support.itraceit.io/en/getting-started?hsLang=en#main-content) - [1. Introduction to iTraceiT](https://support.itraceit.io/en/getting-started?hsLang=en#1-introduction-to-itraceit) - [2. Starting Point & Responsibility](https://support.itraceit.io/en/getting-started?hsLang=en#2-starting-point-responsibility) - [3. Account Setup & Configuration](https://support.itraceit.io/en/getting-started?hsLang=en#3-account-setup-configuration) - [4. Interface & Navigation](https://support.itraceit.io/en/getting-started?hsLang=en#4-interface-navigation) - [Using iTraceiT](https://support.itraceit.io/en/using-itraceit?hsLang=en#main-content) - [Step 1 : Create & Import QR Codes](https://support.itraceit.io/en/using-itraceit?hsLang=en#step-1-create-import-qr-codes) - [Step 2: Add & Enrich Information](https://support.itraceit.io/en/using-itraceit?hsLang=en#step-2-add-enrich-information) - [Step 3: Split, Merge & Group QR Codes](https://support.itraceit.io/en/using-itraceit?hsLang=en#step-3-split-merge-group-qr-codes) - [Step 4: Publish & Share QR Codes](https://support.itraceit.io/en/using-itraceit?hsLang=en#step-4-publish-share-qr-codes) - [Manage QR Code Lifecycle](https://support.itraceit.io/en/using-itraceit?hsLang=en#manage-qr-code-lifecycle) - [Developer Documentation](https://support.itraceit.io/en/developer-documentation?hsLang=en) - [Sectors & Actors](https://support.itraceit.io/en/sectors-actors?hsLang=en#main-content) - [SCS Global Services](https://support.itraceit.io/en/sectors-actors?hsLang=en#scs-global-services) - [Blockchain & Security](https://support.itraceit.io/en/blockchain-security?hsLang=en) - [Data Privacy & Compliance](https://support.itraceit.io/en/data-privacy-compliance?hsLang=en) - [Troubleshooting & FAQ](https://support.itraceit.io/en/troubleshooting-faq?hsLang=en) - [Glossary](https://support.itraceit.io/en/glossary?hsLang=en) [![logo-white](https://support.itraceit.io/hs-fs/hubfs/logo-white.png?width=120&height=37&name=logo-white.png "logo-white")](https://itplace.com/en/) Copyright © 2025, IT Place (TITP Srl)