B-Glass
Bethan Lister

Duplicate records in data

Ticketclosed

Vellacott Payments logo Vellacott Payments · Duplicate records in data

Femi Olatunji reported duplicate transaction records appearing in the data with slight differences, affecting unique client counts. Investigation confirmed duplicates; customer traced root cause to their own accounting system.

Priority low

What happened

What this says

As at Fri 9 Oct 2026

Femi Olatunji reported duplicate transaction records appearing in the data with slight differences, affecting unique client counts. Investigation confirmed duplicates; customer traced root cause to their own accounting system.

Problem: Duplicate transactions inflating counts and skewing reporting. Handling: Bethan Lister investigated and confirmed duplicates were real. After 4 days Femi identified the source: a duplicate entry in their accounting system. Customer cleaned up the source data. Watch: Data quality issues erode trust even when external in origin. First response took 15+ hours on a data quality issue.

AI · claude-haiku-4-5-20251001 · as at Fri 9 Oct 2026

Details

Updated 9 Oct 26
Prioritylow
Statusclosed
Categorydata_quality
Channelweb
First response (min)928
Helpdeskmade from

Trail

  1. Femi Olatunji
    created · Femi Olatunji 3 Sep 2026 09:16
    Hi, we're seeing some duplicate records in the data. We're getting the same transaction twice with slight differences. This is causing issues when we try to count unique clients. Could you investigate?
  2. Bethan Lister
    Public reply · Bethan Lister 4 Sep 2026 00:44
    Hi Femi, apologies for the delayed response. I've picked this up. Just so I've got this right - you're seeing duplicate transactions in the data? Can you give me an example of what you're seeing so I can investigate?
  3. Bethan Lister
    Internal note · Bethan Lister 8 Sep 2026 10:05
    Reviewed data. Confirms duplicates in transaction records. Likely due to duplicate source records. Ewan to investigate root cause on our data pipeline.
  4. Femi Olatunji
    Public reply · Femi Olatunji 8 Sep 2026 13:53
    We found the issue on our side - our accounting system had a duplicate entry that was pulling through. We've cleaned it up. Should the duplicates be gone now from the brain?
  5. Bethan Lister
    Status change · Bethan Lister 16 Sep 2026 14:51
  6. Status change · 20 Sep 2026 23:59
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