A forensic investigation – more than a campaign adjustment

An established ecommerce brand came to SVRGN after its longtime agency had plateaued. What began as an outside strategy workshop became a full Meta partnership, helping grow the account from six figures to seven figures in monthly revenue within three months.

Then performance began to decline.

Marcia discovered that the issue was not the campaigns themselves, but corrupted purchase data hidden inside years of fragmented tracking systems. Shopify, Meta, Tealium, developers, and multiple agencies were involved, while access and cooperation were limited.

Over several weeks, she investigated live transactions, reviewed technical documentation, traced event IDs, and tested purchase behavior in real time. She eventually found that a legacy Tealium configuration was sending a second purchase event to Meta.

One real sale was being recorded as two conversions, weakening attribution, corrupting audience signals, and training Meta toward the wrong users. As Meta’s Andromeda system learned from that bad data faster, the damage compounded.

Marcia reproduced the issue in front of the owner, proved where the duplicate event was coming from, and pushed the agency controlling Tealium to disable it. A second test confirmed that Meta was finally recording one purchase correctly.

Sales increased approximately 100% the following day, performance stabilized, and the owner regained confidence in the account.

This was more than a campaign adjustment. It was a forensic investigation into a problem that had passed through multiple agencies, developers, and support teams without being solved.

6 figures to 7 figures in 3 months · Duplicate tracking isolated · Sales up 100% after correction