UiPath errors / Version
BusinessRuleException is ambiguous between UiPath.Framework.Activities and UiPath.Core
Cause
Both UiPath.System.Activities and an older UiPath.Framework.Activities are referenced, each exporting BusinessRuleException, causing an ambiguous-reference compile error in Throw activities.
Fix
In Manage Packages, remove the legacy UiPath.Framework.Activities if unused. In Throw/Catch activities, fully qualify the type as UiPath.Core.BusinessRuleException. Run Analyze Project to confirm no remaining ambiguity. Republish after clearing the old package.
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