diff --git a/developer/18.0/reference/messages/km0a008.md b/developer/18.0/reference/messages/km0a008.md
new file mode 100644
index 000000000..ca47d0742
--- /dev/null
+++ b/developer/18.0/reference/messages/km0a008.md
@@ -0,0 +1,11 @@
+---
+title: KM0A008: ERROR_InvalidKeymanKeyboardId
+---
+
+|            |           |
+|------------|---------- |
+| Message    | The specified keyboard id '<param>' contains characters that are not permitted for a \.kmn keyboard id or filename\. |
+| Module     | [kmc-generate.GeneratorMessages](kmc-generate.generatormessages) |
+| Identifier | `ERROR_InvalidKeymanKeyboardId` |
+
+
diff --git a/developer/18.0/reference/messages/km0a009.md b/developer/18.0/reference/messages/km0a009.md
new file mode 100644
index 000000000..4fc0aaddd
--- /dev/null
+++ b/developer/18.0/reference/messages/km0a009.md
@@ -0,0 +1,11 @@
+---
+title: KM0A009: ERROR_InvalidLdmlKeyboardId
+---
+
+|            |           |
+|------------|---------- |
+| Message    | The specified keyboard id '<param>' contains characters that are not permitted for an LDML \.xml keyboard id or filename\. |
+| Module     | [kmc-generate.GeneratorMessages](kmc-generate.generatormessages) |
+| Identifier | `ERROR_InvalidLdmlKeyboardId` |
+
+
diff --git a/developer/18.0/reference/messages/km0a00a.md b/developer/18.0/reference/messages/km0a00a.md
new file mode 100644
index 000000000..032a03ff2
--- /dev/null
+++ b/developer/18.0/reference/messages/km0a00a.md
@@ -0,0 +1,11 @@
+---
+title: KM0A00A: ERROR_InvalidLexicalModelId
+---
+
+|            |           |
+|------------|---------- |
+| Message    | The specified lexical model id '<param>' contains characters that are not permitted or does not match the required pattern of 'author\.bcp47\.uniq'\. |
+| Module     | [kmc-generate.GeneratorMessages](kmc-generate.generatormessages) |
+| Identifier | `ERROR_InvalidLexicalModelId` |
+
+
diff --git a/developer/18.0/reference/messages/kmc-generate.generatormessages.md b/developer/18.0/reference/messages/kmc-generate.generatormessages.md
index f6adf2756..1563d1262 100644
--- a/developer/18.0/reference/messages/kmc-generate.generatormessages.md
+++ b/developer/18.0/reference/messages/kmc-generate.generatormessages.md
@@ -11,3 +11,6 @@ title: Compiler Messages Reference for @keymanapp/kmc-generate
 [KM0A005](km0a005) | `ERROR_CannotWriteOutputFile` | This is an internal error; the message will vary
 [KM0A006](km0a006) | `WARN_ModelIdDoesNotFollowLexicalModelConventions` | The id <param> does not follow the recommended model id conventions\. The id should be all lower case, include only alphanumeric characters and underscore \(\_\), not start with a digit, and should have the structure <author>\.<bcp47>\.<uniq>
 [KM0A007](km0a007) | `ERROR_InvalidTarget` | The specified target platform '<param>' is not a valid target\.
+[KM0A008](km0a008) | `ERROR_InvalidKeymanKeyboardId` | The specified keyboard id '<param>' contains characters that are not permitted for a \.kmn keyboard id or filename\.
+[KM0A009](km0a009) | `ERROR_InvalidLdmlKeyboardId` | The specified keyboard id '<param>' contains characters that are not permitted for an LDML \.xml keyboard id or filename\.
+[KM0A00A](km0a00a) | `ERROR_InvalidLexicalModelId` | The specified lexical model id '<param>' contains characters that are not permitted or does not match the required pattern of 'author\.bcp47\.uniq'\.