diff --git a/python/src/mas/cli/install/settings/manageSettings.py b/python/src/mas/cli/install/settings/manageSettings.py
index 36dd3f069c..8db7942221 100644
--- a/python/src/mas/cli/install/settings/manageSettings.py
+++ b/python/src/mas/cli/install/settings/manageSettings.py
@@ -10,13 +10,14 @@
 
 from typing import TYPE_CHECKING, Dict, List, NoReturn
 from prompt_toolkit.completion import WordCompleter
-from mas.cli.validators import LanguageValidator
+from mas.cli.validators import LanguageValidator, CustomizationArchiveNameValidator
 from mas.devops.aiservice import listAiServiceTenantInstances, listAiServiceInstances
 from openshift.dynamic.exceptions import ResourceNotFoundError
 from ...validators import AiserviceTeanantIDValidator
 from prompt_toolkit import print_formatted_text, HTML
 from mas.devops.utils import isVersionEqualOrAfter
 
+
 import logging
 logger = logging.getLogger(__name__)
 
@@ -265,7 +266,7 @@ def manageSettingsCustomizationArchive(self) -> None:
             ])
 
             if self.yesOrNo("Include customization archive"):
-                self.promptForString("Customization archive name", "mas_app_settings_customization_archive_name")
+                self.promptForString("Customization archive name", "mas_app_settings_customization_archive_name", validator=CustomizationArchiveNameValidator())
                 self.promptForString("Customization archive path/url", "mas_app_settings_customization_archive_url")
                 if self.yesOrNo("Provide authentication to access customization archive URL"):
                     self.promptForString("Username", "mas_app_settings_customization_archive_username")
diff --git a/python/src/mas/cli/validators.py b/python/src/mas/cli/validators.py
index b658d7751f..69ec48e424 100644
--- a/python/src/mas/cli/validators.py
+++ b/python/src/mas/cli/validators.py
@@ -240,3 +240,23 @@ def validate(self, document: Document) -> None:
 
         if not match(r"^.{1,4}$", bucketPrefix):
             raise ValidationError(message='Bucket prefix does not meet the requirement', cursor_position=len(bucketPrefix))
+
+
+class CustomizationArchiveNameValidator(Validator):
+    def validate(self, document: Document) -> None:
+        """
+        Validate customization archive name format.
+        Must match the pattern: ^[0-9a-zA-Z][0-9a-zA-Z-_.]+$
+        - Must start with alphanumeric character
+        - Can contain alphanumeric characters, hyphens, underscores, and periods
+        - Spaces are not allowed
+        """
+        archiveName = document.text
+
+        if not match(r"^[0-9a-zA-Z][0-9a-zA-Z-_.]+$", archiveName):
+            raise ValidationError(
+                message='Customization archive name must start with alphanumeric character and can only contain alphanumeric characters, hyphens, underscores, and periods (no spaces allowed)',
+                cursor_position=len(archiveName)
+            )
+
+# Made with Bob