diff --git a/internal/distro/fedora/distro.go b/internal/distro/fedora/distro.go
index 132e0fef9..e5a741b31 100644
--- a/internal/distro/fedora/distro.go
+++ b/internal/distro/fedora/distro.go
@@ -795,6 +795,14 @@ func (t *imageType) checkOptions(customizations *blueprint.Customizations, optio
 		}
 	}
 
+	if t.name == "iot-raw-image" {
+		allowed := []string{"User", "Group", "Directories", "Files", "Services"}
+		if err := customizations.CheckAllowed(allowed...); err != nil {
+			return nil, fmt.Errorf("unsupported blueprint customizations found for image type %q: (allowed: %s)", t.name, strings.Join(allowed, ", "))
+		}
+		// TODO: consider additional checks, such as those in "edge-simplified-installer" in RHEL distros
+	}
+
 	// BootISO's have limited support for customizations.
 	// TODO: Support kernel name selection for image-installer
 	if t.bootISO {
diff --git a/internal/distro/fedora/distro_test.go b/internal/distro/fedora/distro_test.go
index a05fcf02e..9742a6c6f 100644
--- a/internal/distro/fedora/distro_test.go
+++ b/internal/distro/fedora/distro_test.go
@@ -418,12 +418,14 @@ func TestDistro_ManifestError(t *testing.T) {
 			}
 			testPackageSpecSets := distro_test_common.GetTestingImagePackageSpecSets("kernel", imgType)
 			_, _, err := imgType.Manifest(bp.Customizations, imgOpts, nil, testPackageSpecSets, nil, 0)
-			if imgTypeName == "iot-commit" || imgTypeName == "iot-container" || imgTypeName == "iot-raw-image" {
+			if imgTypeName == "iot-commit" || imgTypeName == "iot-container" {
 				assert.EqualError(t, err, "kernel boot parameter customizations are not supported for ostree types")
 			} else if imgTypeName == "iot-installer" {
 				assert.EqualError(t, err, fmt.Sprintf("boot ISO image type \"%s\" requires specifying a URL from which to retrieve the OSTree commit", imgTypeName))
 			} else if imgTypeName == "image-installer" {
 				assert.EqualError(t, err, fmt.Sprintf("unsupported blueprint customizations found for boot ISO image type \"%s\": (allowed: User, Group)", imgTypeName))
+			} else if imgTypeName == "iot-raw-image" {
+				assert.EqualError(t, err, fmt.Sprintf("unsupported blueprint customizations found for image type %q: (allowed: User, Group, Directories, Files, Services)", imgTypeName))
 			} else {
 				assert.NoError(t, err)
 			}
@@ -565,8 +567,10 @@ func TestDistro_CustomFileSystemManifestError(t *testing.T) {
 		for _, imgTypeName := range arch.ListImageTypes() {
 			imgType, _ := arch.GetImageType(imgTypeName)
 			_, _, err := imgType.Manifest(bp.Customizations, distro.ImageOptions{}, nil, nil, nil, 0)
-			if imgTypeName == "iot-commit" || imgTypeName == "iot-container" || imgTypeName == "iot-raw-image" {
+			if imgTypeName == "iot-commit" || imgTypeName == "iot-container" {
 				assert.EqualError(t, err, "Custom mountpoints are not supported for ostree types")
+			} else if imgTypeName == "iot-raw-image" {
+				assert.EqualError(t, err, fmt.Sprintf("unsupported blueprint customizations found for image type %q: (allowed: User, Group, Directories, Files, Services)", imgTypeName))
 			} else if imgTypeName == "iot-installer" || imgTypeName == "image-installer" {
 				continue
 			} else {
@@ -594,8 +598,10 @@ func TestDistro_TestRootMountPoint(t *testing.T) {
 			imgType, _ := arch.GetImageType(imgTypeName)
 			testPackageSpecSets := distro_test_common.GetTestingImagePackageSpecSets("kernel", imgType)
 			_, _, err := imgType.Manifest(bp.Customizations, distro.ImageOptions{}, nil, testPackageSpecSets, nil, 0)
-			if imgTypeName == "iot-commit" || imgTypeName == "iot-container" || imgTypeName == "iot-raw-image" {
+			if imgTypeName == "iot-commit" || imgTypeName == "iot-container" {
 				assert.EqualError(t, err, "Custom mountpoints are not supported for ostree types")
+			} else if imgTypeName == "iot-raw-image" {
+				assert.EqualError(t, err, fmt.Sprintf("unsupported blueprint customizations found for image type %q: (allowed: User, Group, Directories, Files, Services)", imgTypeName))
 			} else if imgTypeName == "iot-installer" || imgTypeName == "image-installer" {
 				continue
 			} else {
@@ -730,8 +736,10 @@ func TestDistro_CustomFileSystemPatternMatching(t *testing.T) {
 		for _, imgTypeName := range arch.ListImageTypes() {
 			imgType, _ := arch.GetImageType(imgTypeName)
 			_, _, err := imgType.Manifest(bp.Customizations, distro.ImageOptions{}, nil, nil, nil, 0)
-			if imgTypeName == "iot-commit" || imgTypeName == "iot-container" || imgTypeName == "iot-raw-image" {
+			if imgTypeName == "iot-commit" || imgTypeName == "iot-container" {
 				assert.EqualError(t, err, "Custom mountpoints are not supported for ostree types")
+			} else if imgTypeName == "iot-raw-image" {
+				assert.EqualError(t, err, fmt.Sprintf("unsupported blueprint customizations found for image type %q: (allowed: User, Group, Directories, Files, Services)", imgTypeName))
 			} else if imgTypeName == "iot-installer" || imgTypeName == "image-installer" {
 				continue
 			} else {
@@ -759,8 +767,10 @@ func TestDistro_CustomUsrPartitionNotLargeEnough(t *testing.T) {
 			imgType, _ := arch.GetImageType(imgTypeName)
 			testPackageSpecSets := distro_test_common.GetTestingImagePackageSpecSets("kernel", imgType)
 			_, _, err := imgType.Manifest(bp.Customizations, distro.ImageOptions{}, nil, testPackageSpecSets, nil, 0)
-			if imgTypeName == "iot-commit" || imgTypeName == "iot-container" || imgTypeName == "iot-raw-image" {
+			if imgTypeName == "iot-commit" || imgTypeName == "iot-container" {
 				assert.EqualError(t, err, "Custom mountpoints are not supported for ostree types")
+			} else if imgTypeName == "iot-raw-image" {
+				assert.EqualError(t, err, fmt.Sprintf("unsupported blueprint customizations found for image type %q: (allowed: User, Group, Directories, Files, Services)", imgTypeName))
 			} else if imgTypeName == "iot-installer" || imgTypeName == "image-installer" {
 				continue
 			} else {