diff --git a/docs/csharp/language-reference/toc.yml b/docs/csharp/language-reference/toc.yml
index af8606c9862e8..17f963c474608 100644
--- a/docs/csharp/language-reference/toc.yml
+++ b/docs/csharp/language-reference/toc.yml
@@ -920,7 +920,7 @@ items:
     - name: CS0243
       href: ../misc/cs0243.md
     - name: CS0245
-      href: ../misc/cs0245.md
+      href: /dotnet/csharp/language-reference/compiler-messages/using-statement-declaration-errors#implementing-idisposable-and-iasyncdisposable
     - name: CS0247
       href: ../misc/cs0247.md
     - name: CS0249
@@ -1406,21 +1406,21 @@ items:
     - name: CS1023
       href: ../misc/cs1023.md
     - name: CS1024
-      href: ../misc/cs1024.md
+      href: /dotnet/csharp/language-reference/compiler-messages/preprocessor-errors
     - name: CS1025
-      href: ../misc/cs1025.md
+      href: /dotnet/csharp/language-reference/compiler-messages/preprocessor-errors
     - name: CS1026
       href: ./compiler-messages/cs1026.md
     - name: CS1027
-      href: ../misc/cs1027.md
+      href: /dotnet/csharp/language-reference/compiler-messages/preprocessor-errors
     - name: CS1028
-      href: ../misc/cs1028.md
+      href: /dotnet/csharp/language-reference/compiler-messages/preprocessor-errors
     - name: CS1029
-      href: ./compiler-messages/cs1029.md
+      href: /dotnet/csharp/language-reference/compiler-messages/preprocessor-errors
     - name: CS1031
       href: ../misc/cs1031.md
     - name: CS1032
-      href: ../misc/cs1032.md
+      href: /dotnet/csharp/language-reference/compiler-messages/preprocessor-errors
     - name: CS1033
       href: ../misc/cs1033.md
     - name: CS1034
@@ -1430,9 +1430,9 @@ items:
     - name: CS1036
       href: ../misc/cs1036.md
     - name: CS1038
-      href: ../misc/cs1038.md
+      href: /dotnet/csharp/language-reference/compiler-messages/preprocessor-errors
     - name: CS1040
-      href: ../misc/cs1040.md
+      href: /dotnet/csharp/language-reference/compiler-messages/preprocessor-errors
     - name: CS1041
       href: ../misc/cs1041.md
     - name: CS1043
@@ -1478,7 +1478,7 @@ items:
     - name: CS1515
       href: ../misc/cs1515.md
     - name: CS1517
-      href: ../misc/cs1517.md
+      href: /dotnet/csharp/language-reference/compiler-messages/preprocessor-errors
     - name: CS1518
       href: ../misc/cs1518.md
     - name: CS1519
@@ -1528,7 +1528,7 @@ items:
     - name: CS1559
       href: ../misc/cs1559.md
     - name: CS1560
-      href: ../misc/cs1560.md
+      href: /dotnet/csharp/language-reference/compiler-messages/preprocessor-errors
     - name: CS1561
       href: ../misc/cs1561.md
     - name: CS1562
@@ -1548,11 +1548,11 @@ items:
     - name: CS1575
       href: ../misc/cs1575.md
     - name: CS1576
-      href: ../misc/cs1576.md
+      href: /dotnet/csharp/language-reference/compiler-messages/preprocessor-errors
     - name: CS1577
       href: ../misc/cs1577.md
     - name: CS1578
-      href: ../misc/cs1578.md
+      href: /dotnet/csharp/language-reference/compiler-messages/preprocessor-errors
     - name: CS1579
       href: ./compiler-messages/cs1579.md
     - name: CS1583
@@ -1956,7 +1956,7 @@ items:
     - name: CS0809
       href: ../misc/cs0809.md
     - name: CS1030
-      href: ../misc/cs1030.md
+      href: /dotnet/csharp/language-reference/compiler-messages/preprocessor-errors
     - name: CS1058
       href: ./compiler-messages/cs1058.md
     - name: CS1060
@@ -1994,11 +1994,11 @@ items:
     - name: CS1616
       href: ./compiler-messages/cs1616.md
     - name: CS1633
-      href: ../misc/cs1633.md
+      href: /dotnet/csharp/language-reference/compiler-messages/preprocessor-errors
     - name: CS1634
-      href: ../misc/cs1634.md
+      href: /dotnet/csharp/language-reference/compiler-messages/preprocessor-errors
     - name: CS1635
-      href: ../misc/cs1635.md
+      href: /dotnet/csharp/language-reference/compiler-messages/preprocessor-errors
     - name: CS1645
       href: ../misc/cs1645.md
     - name: CS1658
@@ -2014,15 +2014,15 @@ items:
     - name: CS1690
       href: ./compiler-messages/cs1690.md
     - name: CS1691
-      href: ./compiler-messages/cs1691.md
+      href: /dotnet/csharp/language-reference/compiler-messages/preprocessor-errors
     - name: CS1692
-      href: ../misc/cs1692.md
+      href: /dotnet/csharp/language-reference/compiler-messages/preprocessor-errors
     - name: CS1694
-      href: ../misc/cs1694.md
+      href: /dotnet/csharp/language-reference/compiler-messages/preprocessor-errors
     - name: CS1695
-      href: ../misc/cs1695.md
+      href: /dotnet/csharp/language-reference/compiler-messages/preprocessor-errors
     - name: CS1696
-      href: ../misc/cs1696.md
+      href: /dotnet/csharp/language-reference/compiler-messages/preprocessor-errors
     - name: CS1697
       href: ../misc/cs1697.md
     - name: CS1699
@@ -2030,7 +2030,7 @@ items:
     - name: CS1707
       href: ../misc/cs1707.md
     - name: CS1709
-      href: ../misc/cs1709.md
+      href: /dotnet/csharp/language-reference/compiler-messages/preprocessor-errors
     - name: CS1720
       href: ../misc/cs1720.md
     - name: CS1723
@@ -2140,7 +2140,7 @@ items:
     - name: CS0652
       href: ../misc/cs0652.md
     - name: CS0728
-      href: ../misc/cs0728.md
+      href: /dotnet/csharp/language-reference/compiler-messages/using-statement-declaration-errors#using-variable-scope-and-control-flow
     - name: CS1571
       href: ../misc/cs1571.md
     - name: CS1572