Known Issue 433

Exposures with very large contracts can produce incorrect gross loss, when saved by layer/geo or layer/zone.

Issue ID	433
Summary	Exposures with very large contracts can produce incorrect gross loss, when saved by layer/geo or layer/zone.
Description	If an exposure contains contracts with more than 25,000 locations (or locations are disaggregated into more than 25,000 risks) and results are saved by layer/geo or layer/zone, the produced gross losses can be incorrect. Specifically they will vary run by run, as location batches are processed inconsistently.
Resolved in	Touchstone 2025 (13.0)
Date posted	1/24/2025
Software versions affected	12.2.3, 12.2, 12.0, 11.5
Feature set	Detailed loss
Models
Potential for loss numbers impact	Yes
Workaround	This can only be avoided by not using save by layer/geo or layer/zone save by options, or splitting contracts in a way that no contract has more than 25,000 locations (or 25,000 disaggregated risks).