From 12c6d5c28b9948e544a808fbeda0754d1e13ed07 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A1s=20B=20Nagy?=
 <20251272+BNAndras@users.noreply.github.com>
Date: Mon, 5 Jan 2026 17:50:24 -0800
Subject: [PATCH 1/2] Sync `phone-number` tests

---
 exercises/practice/phone-number/.meta/tests.toml    | 10 ++++++++++
 exercises/practice/phone-number/PhoneNumberTests.fs |  4 ++--
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/exercises/practice/phone-number/.meta/tests.toml b/exercises/practice/phone-number/.meta/tests.toml
index ee308c3e5..24dbf07a7 100644
--- a/exercises/practice/phone-number/.meta/tests.toml
+++ b/exercises/practice/phone-number/.meta/tests.toml
@@ -20,6 +20,11 @@ description = "cleans numbers with multiple spaces"
 
 [598d8432-0659-4019-a78b-1c6a73691d21]
 description = "invalid when 9 digits"
+include = false
+
+[2de74156-f646-42b5-8638-0ef1d8b58bc2]
+description = "invalid when 9 digits"
+reimplements = "598d8432-0659-4019-a78b-1c6a73691d21"
 
 [57061c72-07b5-431f-9766-d97da7c4399d]
 description = "invalid when 11 digits does not start with a 1"
@@ -32,6 +37,11 @@ description = "valid when 11 digits and starting with 1 even with punctuation"
 
 [c6a5f007-895a-4fc5-90bc-a7e70f9b5cad]
 description = "invalid when more than 11 digits"
+include = false
+
+[4a1509b7-8953-4eec-981b-c483358ff531]
+description = "invalid when more than 11 digits"
+reimplements = "c6a5f007-895a-4fc5-90bc-a7e70f9b5cad"
 
 [63f38f37-53f6-4a5f-bd86-e9b404f10a60]
 description = "invalid with letters"
diff --git a/exercises/practice/phone-number/PhoneNumberTests.fs b/exercises/practice/phone-number/PhoneNumberTests.fs
index ecc95d89b..a13bb3f43 100644
--- a/exercises/practice/phone-number/PhoneNumberTests.fs
+++ b/exercises/practice/phone-number/PhoneNumberTests.fs
@@ -22,7 +22,7 @@ let ``Cleans numbers with multiple spaces`` () =
 
 [<Fact(Skip = "Remove this Skip property to run this test")>]
 let ``Invalid when 9 digits`` () =
-    let expected: Result<uint64,string> = Error "incorrect number of digits"
+    let expected: Result<uint64,string> = Error "must not be fewer than 10 digits"
     clean "123456789" |> should equal expected
 
 [<Fact(Skip = "Remove this Skip property to run this test")>]
@@ -42,7 +42,7 @@ let ``Valid when 11 digits and starting with 1 even with punctuation`` () =
 
 [<Fact(Skip = "Remove this Skip property to run this test")>]
 let ``Invalid when more than 11 digits`` () =
-    let expected: Result<uint64,string> = Error "more than 11 digits"
+    let expected: Result<uint64,string> = Error "must not be greater than 11 digits"
     clean "321234567890" |> should equal expected
 
 [<Fact(Skip = "Remove this Skip property to run this test")>]

From 4762cdcc440d70396752701e0910dd42c129464c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A1s=20B=20Nagy?=
 <20251272+BNAndras@users.noreply.github.com>
Date: Mon, 5 Jan 2026 17:59:17 -0800
Subject: [PATCH 2/2] Update error messages

---
 exercises/practice/phone-number/.meta/Example.fs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/exercises/practice/phone-number/.meta/Example.fs b/exercises/practice/phone-number/.meta/Example.fs
index 29c54fea4..4952efa59 100644
--- a/exercises/practice/phone-number/.meta/Example.fs
+++ b/exercises/practice/phone-number/.meta/Example.fs
@@ -12,8 +12,8 @@ let private checkNumberLength (input:string): Result<string, string> =
     | 10 -> Ok input
     | 11 when input.[0] = '1'-> Ok (input.Substring 1)
     | 11 -> Error "11 digits must start with 1"
-    | a when a > 11 -> Error "more than 11 digits"
-    | _ -> Error "incorrect number of digits"
+    | a when a > 11 -> Error "must not be greater than 11 digits"
+    | _ -> Error "must not be fewer than 10 digits"
 
 let private checkNoneNumericChars (input:string): Result<string, string> =
     match input with