FA-63053 / Insurance premium rating / Member archive

Schedule rating credits and debits: Unknown credit categories are silently ignored · case 03

Unfiled schedule categories pass without an error.

Member previewVariant 3 · 3 implementations · 9 checks per implementation

Case contract

Input premium, items [[category, per mille; negative is a credit]], caps {category: max abs per mille}, max_credit, max_debit. Unknown category -> 'unknown category <name>'. Items are summed per category, each category clamped to its cap, the total clamped to [-max_credit, max_debit], and premium*(1000+total)/1000 rounded half-up. Return [total, premium].

Why this case matters

Premium rating engines apply ordered tabular rules where one misplaced boundary or step silently misprices policies.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
unknown credit category	`[10, 679414]`	`"unknown category weather"`	Failed

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