diff --git a/.changelog/44537.txt b/.changelog/44537.txt
new file mode 100644
index 000000000000..1ed981af5c9e
--- /dev/null
+++ b/.changelog/44537.txt
@@ -0,0 +1,3 @@
+```release-note:bug
+resource/aws_pinpointsmsvoicev2_phone_number: Fix `number_type` to support SHORT_CODE and prevent creation attempts with clear error message
+```
diff --git a/internal/service/pinpointsmsvoicev2/phone_number.go b/internal/service/pinpointsmsvoicev2/phone_number.go
index 51eb16bff18b..21d0a9c51919 100644
--- a/internal/service/pinpointsmsvoicev2/phone_number.go
+++ b/internal/service/pinpointsmsvoicev2/phone_number.go
@@ -101,7 +101,7 @@ func (r *phoneNumberResource) Schema(ctx context.Context, request resource.Schem
 				},
 			},
 			"number_type": schema.StringAttribute{
-				CustomType: fwtypes.StringEnumType[awstypes.RequestableNumberType](),
+				CustomType: fwtypes.StringEnumType[awstypes.NumberType](),
 				Required:   true,
 				PlanModifiers: []planmodifier.String{
 					stringplanmodifier.RequiresReplace(),
@@ -177,6 +177,15 @@ func (r *phoneNumberResource) Create(ctx context.Context, request resource.Creat
 		return
 	}
 
+	if data.NumberType.ValueString() == string(awstypes.NumberTypeShortCode) {
+		response.Diagnostics.AddError(
+			"Invalid Number Type",
+			"SHORT_CODE cannot be created via Terraform. Short codes must be provisioned through AWS Support. "+
+				"After provisioning, you can import the resource using 'terraform import'.",
+		)
+		return
+	}
+
 	conn := r.Meta().PinpointSMSVoiceV2Client(ctx)
 
 	input := &pinpointsmsvoicev2.RequestPhoneNumberInput{}
diff --git a/internal/service/pinpointsmsvoicev2/phone_number_test.go b/internal/service/pinpointsmsvoicev2/phone_number_test.go
index 13f67610d794..1ce073675553 100644
--- a/internal/service/pinpointsmsvoicev2/phone_number_test.go
+++ b/internal/service/pinpointsmsvoicev2/phone_number_test.go
@@ -212,6 +212,26 @@ func TestAccPinpointSMSVoiceV2PhoneNumber_twoWayChannelConnect(t *testing.T) {
 	})
 }
 
+func TestAccPinpointSMSVoiceV2PhoneNumber_shortCodeCreateValidation(t *testing.T) {
+	ctx := acctest.Context(t)
+
+	resource.ParallelTest(t, resource.TestCase{
+		PreCheck: func() {
+			acctest.PreCheck(ctx, t)
+			testAccPreCheckPhoneNumber(ctx, t)
+		},
+		ErrorCheck:               acctest.ErrorCheck(t, names.PinpointSMSVoiceV2ServiceID),
+		ProtoV5ProviderFactories: acctest.ProtoV5ProviderFactories,
+		CheckDestroy:             testAccCheckPhoneNumberDestroy(ctx),
+		Steps: []resource.TestStep{
+			{
+				Config:      testAccPhoneNumberConfig_shortCode,
+				ExpectError: regexache.MustCompile(`SHORT_CODE cannot be created via Terraform`),
+			},
+		},
+	})
+}
+
 func TestAccPinpointSMSVoiceV2PhoneNumber_disappears(t *testing.T) {
 	ctx := acctest.Context(t)
 	var phoneNumber awstypes.PhoneNumberInformation
@@ -571,3 +591,13 @@ resource "aws_pinpointsmsvoicev2_phone_number" "test" {
 }
 `, tagKey1, tagValue1, tagKey2, tagValue2)
 }
+
+const testAccPhoneNumberConfig_shortCode = `
+resource "aws_pinpointsmsvoicev2_phone_number" "test" {
+  iso_country_code = "US"
+  message_type     = "TRANSACTIONAL"
+  number_type      = "SHORT_CODE"
+
+  number_capabilities = ["SMS"]
+}
+`