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Manually. The system can generate the retrospective amortization calculation when you use the Run Retrospective Amortization panel. For more information, see Run Retrospective Amortization.
During Amortization Rule Change. The system can generate the retrospective amortization calculation during an amortization rule change. For more information, see How the System Calculates Amortization After an Amortization Rule Change.
Automatically through Amortization & Accretion Rule Configurations. For more information, see Create Amortization & Accretion Rules. You can configure an amortization & accretion rule such that:
Mortgage Backed Securities automatically do a retrospective calculation.
All other securities automatically do a prospective calculation.