37 lines
1017 B
Markdown
37 lines
1017 B
Markdown
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---
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title: "ASP0023: Route conflict detected between route handlers"
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description: "Learn about analysis rule ASP0023: Route conflict detected between route handlers"
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author: tdykstra
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monikerRange: '>= aspnetcore-8.0'
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ms.author: tdykstra
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ms.date: 3/24/2023
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uid: diagnostics/asp0023
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---
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# ASP0023: Route conflict detected between route handlers
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| | Value |
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| **Rule ID** |ASP0023|
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| **Category** |Usage|
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| **Fix is breaking or non-breaking** |Non-breaking|
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## Cause
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An HTTP request matches multiple routes, resulting in an ambiguous match error.
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## Rule description
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This diagnostic is emitted when a route conflict is detected.
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## How to fix violations
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To fix a violation of this rule, change the route's pattern, HTTP method, or route constraints.
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## When to suppress warnings
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Do not suppress a warning from this rule.
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## Notes
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[ASP0022](xref:diagnostics/asp0022) warns on route conflicts in [minimal API](xref:fundamentals/apis) apps, this analyzer warns on route conflicts in ASP.NET Core MVC apps.
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