From fbb0468c159fc27b7f08066146585e7595f2b90e Mon Sep 17 00:00:00 2001
From: Copilot <198982749+Copilot@users.noreply.github.com>
Date: Sat, 21 Feb 2026 10:24:22 +0100
Subject: [PATCH] Add unmet_authentication_requirements error constant

---
 src/OpenIddict.Abstractions/OpenIddictConstants.cs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/OpenIddict.Abstractions/OpenIddictConstants.cs b/src/OpenIddict.Abstractions/OpenIddictConstants.cs
index db113429..9f6401c7 100644
--- a/src/OpenIddict.Abstractions/OpenIddictConstants.cs
+++ b/src/OpenIddict.Abstractions/OpenIddictConstants.cs
@@ -242,6 +242,7 @@ public static class OpenIddictConstants
         public const string SlowDown = "slow_down";
         public const string TemporarilyUnavailable = "temporarily_unavailable";
         public const string UnauthorizedClient = "unauthorized_client";
+        public const string UnmetAuthenticationRequirements = "unmet_authentication_requirements";
         public const string UnsupportedGrantType = "unsupported_grant_type";
         public const string UnsupportedResponseType = "unsupported_response_type";
         public const string UnsupportedTokenType = "unsupported_token_type";