How Delhi's Public Record Systems Got Flooded With Duplicate Images — and Why It Took Years to Notice

Delhi's government digitisation push, which accelerated after 2019 under pressure from both the Aam Aadmi Party administration and central Ministry of Electronics and IT mandates, has left a compounding administrative headache in its wake: thousands of duplicate scanned images embedded across official digital records, from property documents at sub-registrar offices to patient files at government hospitals. The problem, long flagged by data administrators at the ground level, is now forcing multiple departments to run systematic deduplication audits before the records can be migrated to the next phase of the Delhi e-District portal upgrade, scheduled for the third quarter of 2026.

This matters now because the stakes have grown considerably. Delhi Metro Phase 4 corridor approvals, land acquisition notices along the Janakpuri–RK Ashram stretch, and Yamuna floodplain rehabilitation files all depend on clean, non-redundant digital document stores. When a duplicate image sits in a registry database — sometimes three or four versions of the same scanned deed — it creates validation failures that delay approvals by weeks. For residents waiting on mutation certificates in places like Rohini or Sangam Vihar, those weeks translate into direct financial cost.

How the Duplication Happened

The roots go back to a 2015-2016 digitisation sprint run across Delhi's 18 sub-registrar offices, funded partly through the Digital India programme. Scanning operators at offices including the Tis Hazari court complex and the Kashmere Gate registration office were paid per document processed, a volume-based model that created an unintended incentive to rescan documents that had already been captured rather than flag and correct errors. The problem compounded when departments began sharing archives without standardising file-naming conventions. A single property deed for a flat in Dwarka Sector 10, for instance, might appear as three separate image files — each with a slightly different timestamp — across the Delhi Revenue Department's server, the municipal property tax portal, and a district collectorate backup drive.

The National Informatics Centre, which manages backend infrastructure for the e-District platform, identified the scale of the issue during a 2023 internal audit, according to publicly available procurement documents for a subsequent data-cleaning contract. That audit reportedly found duplication rates of between 12 and 18 percent in scanned document repositories across several states, with high-volume urban registration offices — including those in Delhi — among the worst affected. The e-District platform had processed more than 1.5 crore service requests in Delhi alone by the end of 2024, making the underlying data hygiene problem increasingly difficult to ignore.

At the Delhi Secretariat in ITO, officials from the Revenue Department and the Department of Information Technology have been coordinating since early 2026 on a deduplication framework that uses hash-matching — a technique that generates a unique digital fingerprint for each image file — to identify and flag redundant entries without deleting records outright. The cautious approach reflects legal constraints: under the Indian Registration Act, original scanned documents cannot simply be purged without a paper trail confirming the deletion was authorised.

What Comes Next for Residents and Departments

The practical consequences for Delhiites are likely to show up most visibly at three pressure points over the next six months. Property mutation requests filed through the MCD's online portal, particularly in densely transacted areas like Laxmi Nagar and Uttam Nagar, may face temporary processing slowdowns as back-end databases are cleaned and re-indexed. Applicants already in the queue are being advised by district offices to retain physical copies of all submitted documents as a safeguard against any record-matching errors during the transition.

Government hospitals under the Delhi Health Department — including GTB Hospital in Dilshad Garden and Lok Nayak Hospital near Daryaganj — are running parallel deduplication exercises on patient imaging files stored through the e-hospital system, a process expected to continue through September 2026. The health department's data team, in internal presentations reviewed for public procurement records, has set a target of reducing redundant image files by at least 80 percent before the next system upgrade cycle begins.

For citizens, the most immediate advice from district revenue offices is straightforward: if you have applied for any document involving scanned records in the past 24 months and have not received confirmation, follow up in person at your local sub-registrar office rather than assuming the digital application is progressing normally. The deduplication fix, when it works, will be invisible. Until it does, the friction is very real.