[C# Errors and diagnostics] - Add diagnostics on feature & version mismatch in C# 9

[BillWagner]

Type of issue

Missing information

Description

The following error codes were added in C# 9 related to feature and version mismatches:

• "CS8830"
• "CS8831"
• "CS8888"
• "CS8889"
• "CS8890"
• "CS8891"

Page URL

https://learn.microsoft.com/en-us/dotnet/csharp/misc/sorry-we-don-t-have-specifics-on-this-csharp-error

Content source URL

https://github.com/dotnet/docs/blob/main/docs/csharp/misc/sorry-we-don-t-have-specifics-on-this-csharp-error.md

Document Version Independent Id

58a19505-ac46-c5c8-12cc-fe87b6aa18a7

Platform Id

8acee5cb-4bef-a4f2-edd5-e8e236844c4e

Article author

@BillWagner

Metadata

• ID: bbb051ee-f020-66ba-c601-4a08ad32ef61
• PlatformId: 8acee5cb-4bef-a4f2-edd5-e8e236844c4e
• Service: dotnet-csharp
• Sub-service: errors-warnings

Related Issues

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Associated WorkItem - 575819