common error code prefixes in ASP.NET

Here’s a more comprehensive and organized list of common error code prefixes used in ASP.NET Core and related libraries, particularly in areas like authentication, authorization, and identity management:

1. IDX (Identity Model Errors)

• Purpose: Relates to identity, token validation, and cryptographic operations, particularly in the Microsoft IdentityModel libraries used for handling JWTs, OAuth, OpenID Connect, etc.
• Examples:
  • IDX102: Errors related to token validation.
    • IDX10223: Signature validation failed.
  • IDX105: Errors related to token processing.
    • IDX10501: Token has expired.
    • IDX10503: Signature validation failed due to an invalid key.
  • IDX106: Errors related to token lifetime validation.
    • IDX10634: Token has an invalid lifetime.
  • IDX208: Errors related to metadata retrieval.
    • IDX20803: Unable to retrieve metadata.

2. CORS (Cross-Origin Resource Sharing Errors)

• Purpose: Deals with cross-origin requests and related security policies.
• Examples:
  • CORS: General errors related to CORS policy enforcement.
    • CORS1000: CORS policy error, such as disallowed origin or method.

3. AUTH (Authentication Errors)

• Purpose: Generic authentication errors, often tied to the ASP.NET Core Authentication middleware.
• Examples:
  • AUTH0001: Failed to authenticate the user due to missing credentials.
  • AUTH1001: Unauthorized access attempt detected.

4. SEC (Security Errors)

• Purpose: Broad category for security-related errors, including encryption, decryption, and secure data handling.
• Examples:
  • SEC0001: Encryption operation failed.
  • SEC1001: Decryption key is invalid or missing.

5. SAML (Security Assertion Markup Language Errors)

• Purpose: Errors related to SAML authentication, commonly used in Single Sign-On (SSO) scenarios.
• Examples:
  • SAML1001: SAML assertion is invalid or malformed.
  • SAML2002: SAML response signature is invalid.

6. OPENID (OpenID Connect Errors)

• Purpose: Errors related to the OpenID Connect protocol, often involving identity providers (IdPs).
• Examples:
  • OPENID2001: Failed to retrieve OpenID Connect metadata.
  • OPENID3001: Invalid OpenID Connect token received.

7. JWT (JSON Web Token Errors)

• Purpose: Specifically deals with JWT processing and validation.
• Examples:
  • JWT1001: JWT is malformed or contains invalid claims.
  • JWT2001: JWT signature validation failed.

8. HTTP (HTTP Protocol Errors)

• Purpose: General HTTP protocol-related errors, often seen in web API contexts.
• Examples:
  • HTTP400: Bad request error, indicating the request could not be understood or was missing required parameters.
  • HTTP401: Unauthorized error, indicating authentication is required but missing or failed.

9. ENT (Entity Framework or Data Layer Errors)

• Purpose: Errors related to data access, particularly when using Entity Framework or similar ORM tools.
• Examples:
  • ENT1001: Database connection failed.
  • ENT2001: Entity not found or query returned no results.

10. CONFIG (Configuration Errors)

• Purpose: Errors related to application configuration, including app settings, connection strings, etc.
• Examples:
  • CONFIG001: Missing required configuration section.
  • CONFIG1001: Invalid configuration value detected.

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Comments

[Alif-Handery]

ASP.NET error codes can definitely be tricky. It's always helpful to understand the common ones and how to troubleshoot them. For example, if you're encountering error code 521, this blog has some useful .