A recent report released by the Treasury Select of Committee of MPs and compiled by IBM suggests that TSB didn’t carry out its tests properly before transferring five million customers to its new IT system.

The meltdown began on 22 April 2018, when TSB decided to switch its system away from a platform formerly owned by Lloyds Banking Group.

The failure saw hundreds of thousands of customers unable to access their accounts for weeks.

‘Lack of active-active test environments’

Following the meltdown, the bank hired IBM to fix the system.

“IBM has not seen evidence of the application of a rigorous set of go-live criteria to prove production readiness,” according to the report.

“Performance testing did not provide the required evidence of capacity and the lack of active-active test environments have materialised risk due to issues with global load balancing (GLB) across data centres.”

According to IBM, TSB failed to carry out proper tests, as well as understand the risks that were involved. However, TSB believes the report is not a fair reflection of what happened.

TSB also announced that it’s doing all it can to put things right, and promised “customers won’t be left out of pocket”.

Written by Leah Alger