Challenges When Migrating PSPs to Improve Authorization Rates
Blog post from Basis Theory
Merchants migrating to a new payment service provider may experience a temporary decline in authorization rates despite expecting immediate improvements, often because fraud systems must learn from new transaction data, risk tolerances differ, network routing changes, and integration settings may initially contain inconsistencies. To reduce disruption, businesses can coordinate closely with both providers, transfer historical transaction data where possible, thoroughly test integrations, warm fraud models with known-good transactions, and maintain a backup processor or payment-routing capability. After launch, teams should monitor authorization performance, adjust risk parameters with the new PSP, and communicate causes and remediation plans to stakeholders. The source argues that careful planning can limit short-term losses and notes that token vaulting card data may simplify migration choices while reducing direct PCI compliance responsibilities.
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