diff --git a/src/OpenIddict/OpenIddictProvider.Exchange.cs b/src/OpenIddict/OpenIddictProvider.Exchange.cs
index 948bd1da..f4b3caf6 100644
--- a/src/OpenIddict/OpenIddictProvider.Exchange.cs
+++ b/src/OpenIddict/OpenIddictProvider.Exchange.cs
@@ -234,7 +234,8 @@ namespace OpenIddict
                 var token = await tokens.FindByIdAsync(identifier, context.HttpContext.RequestAborted);
                 if (token == null)
                 {
-                    logger.LogError("The token request was rejected because the authorization code was no longer valid.");
+                    logger.LogError("The token request was rejected because the authorization " +
+                                    "code '{Identifier}' was not found in the database.", identifier);
 
                     context.Reject(
                         error: OpenIdConnectConstants.Errors.InvalidGrant,
@@ -269,7 +270,8 @@ namespace OpenIddict
                         }
                     }
 
-                    logger.LogError("The token request was rejected because the authorization code was already redeemed.");
+                    logger.LogError("The token request was rejected because the authorization code " +
+                                    "'{Identifier}' has already been redeemed.", identifier);
 
                     context.Reject(
                         error: OpenIdConnectConstants.Errors.InvalidGrant,
@@ -280,7 +282,8 @@ namespace OpenIddict
 
                 else if (!await tokens.IsValidAsync(token, context.HttpContext.RequestAborted))
                 {
-                    logger.LogError("The token request was rejected because the authorization code was no longer valid.");
+                    logger.LogError("The token request was rejected because the authorization code " +
+                                    "'{Identifier}' was no longer valid.", identifier);
 
                     context.Reject(
                         error: OpenIdConnectConstants.Errors.InvalidGrant,
@@ -299,7 +302,8 @@ namespace OpenIddict
                 var token = await tokens.FindByIdAsync(identifier, context.HttpContext.RequestAborted);
                 if (token == null)
                 {
-                    logger.LogError("The token request was rejected because the refresh token was already redeemed.");
+                    logger.LogError("The token request was rejected because the refresh token " +
+                                    "'{Identifier}' was not found in the database.", identifier);
 
                     context.Reject(
                         error: OpenIdConnectConstants.Errors.InvalidGrant,
@@ -310,7 +314,8 @@ namespace OpenIddict
 
                 else if (await tokens.IsRedeemedAsync(token, context.HttpContext.RequestAborted))
                 {
-                    logger.LogError("The token request was rejected because the refresh token was no longer valid.");
+                    logger.LogError("The token request was rejected because the refresh token " +
+                                    "'{Identifier}' has already been redeemed.", identifier);
 
                     context.Reject(
                         error: OpenIdConnectConstants.Errors.InvalidGrant,
@@ -321,7 +326,8 @@ namespace OpenIddict
 
                 else if (!await tokens.IsValidAsync(token, context.HttpContext.RequestAborted))
                 {
-                    logger.LogError("The token request was rejected because the refresh token was no longer valid.");
+                    logger.LogError("The token request was rejected because the refresh token " +
+                                    "'{Identifier}' was no longer valid.", identifier);
 
                     context.Reject(
                         error: OpenIdConnectConstants.Errors.InvalidGrant,
diff --git a/src/OpenIddict/OpenIddictProvider.Introspection.cs b/src/OpenIddict/OpenIddictProvider.Introspection.cs
index b5042156..8ff1927e 100644
--- a/src/OpenIddict/OpenIddictProvider.Introspection.cs
+++ b/src/OpenIddict/OpenIddictProvider.Introspection.cs
@@ -137,8 +137,7 @@ namespace OpenIddict
                 var token = await tokens.FindByIdAsync(identifier, context.HttpContext.RequestAborted);
                 if (token == null || !await tokens.IsValidAsync(token, context.HttpContext.RequestAborted))
                 {
-                    logger.LogInformation("The token {Identifier} was declared as inactive because " +
-                                          "it was revoked.", identifier);
+                    logger.LogInformation("The token '{Identifier}' was declared as inactive because it was revoked.", identifier);
 
                     context.Active = false;
 
diff --git a/src/OpenIddict/OpenIddictProvider.Revocation.cs b/src/OpenIddict/OpenIddictProvider.Revocation.cs
index 777ccbd5..0e3ed525 100644
--- a/src/OpenIddict/OpenIddictProvider.Revocation.cs
+++ b/src/OpenIddict/OpenIddictProvider.Revocation.cs
@@ -193,7 +193,8 @@ namespace OpenIddict
             var token = await tokens.FindByIdAsync(identifier, context.HttpContext.RequestAborted);
             if (token == null || await tokens.IsRevokedAsync(token, context.HttpContext.RequestAborted))
             {
-                logger.LogInformation("The token '{Identifier}' was already revoked.", identifier);
+                logger.LogInformation("The token '{Identifier}' was not revoked because " +
+                                      "it was already marked as invalid.", identifier);
 
                 context.Revoked = true;