Known Issue 395

Back-allocation of ByTreaty losses into more granular save-by tables (ByTreatyGeo, ByTreatyExposureAttribute, ByTreatyExposureAttributeGeo) can be incorrect.

Issue ID	395
Summary	Back-allocation of ByTreaty losses into more granular save-by tables (ByTreatyGeo, ByTreatyExposureAttribute, ByTreatyExposureAttributeGeo) can be incorrect.
Description	Mostly observed for complex scenarios with location UDFs and treaty and multiple layers/contracts. Occurs when there are many location UDFs and treaties that take different ratios of loss for each location UDF (such as SS), especially when each treaty only affects a small fraction of the UDFs.
Resolved in	Touchstone 2025 (13.0)
Date posted	5/7/2024
Software versions affected	12.2.3, 12.0, 11.5, 11.2, 11.0
Feature set	Detailed loss
Models
Potential for loss numbers impact	Yes
Workaround