diff --git a/vendor/magento/module-negotiable-quote/Plugin/Quote/Model/QuoteAttributeValidator.php b/vendor/magento/module-negotiable-quote/Plugin/Quote/Model/QuoteAttributeValidator.php
new file mode 100644
index 000000000000..7d502fae37f8
--- /dev/null
+++ b/vendor/magento/module-negotiable-quote/Plugin/Quote/Model/QuoteAttributeValidator.php
@@ -0,0 +1,82 @@
+<?php
+/************************************************************************
+ * ADOBE CONFIDENTIAL
+ *
+ * Copyright 2023 Adobe
+ * All Rights Reserved.
+ *
+ * NOTICE: All information contained herein is, and remains
+ * the property of Adobe and its suppliers, if any. The intellectual
+ * and technical concepts contained herein are proprietary to Adobe
+ * and its suppliers and are protected by all applicable intellectual
+ * property laws, including trade secret and copyright laws.
+ * Dissemination of this information or reproduction of this material
+ * is strictly forbidden unless prior written permission is obtained
+ * from Adobe.
+ * ************************************************************************
+ */
+declare(strict_types=1);
+
+namespace Magento\NegotiableQuote\Plugin\Quote\Model;
+
+use Magento\Framework\Phrase;
+use Magento\NegotiableQuote\Plugin\Quote\Model\QuoteAttributeValidator\AttributeValidatorInterface;
+use Magento\Quote\Api\Data\CartInterface;
+
+class QuoteAttributeValidator
+{
+    /**
+     * @var AttributeValidatorInterface[]
+     */
+    private $attributeValidator;
+
+    /**
+     * @param AttributeValidatorInterface[] $attributeValidator
+     */
+    public function __construct(array $attributeValidator)
+    {
+        $this->attributeValidator = $attributeValidator;
+    }
+
+    /**
+     * Validate quote attribute.
+     *
+     * @param string $attribute
+     * @param CartInterface $initialQuote
+     * @param CartInterface $quote
+     * @return Phrase|null
+     */
+    public function validate(
+        string $attribute,
+        CartInterface $initialQuote,
+        CartInterface $quote
+    ): ?Phrase {
+        $method = 'get'
+            . $this->snakeCaseToUpperCamelCase($attribute);
+
+        if ($quote->$method()) {
+            $oldValue = $initialQuote->$method();
+            $newValue = $quote->$method();
+            if ((isset($this->attributeValidator[$attribute]) &&
+                !$this->attributeValidator[$attribute]->validate($oldValue, $newValue)) ||
+                (!isset($this->attributeValidator[$attribute]) && $oldValue != $newValue)) {
+                    return __(
+                        'You cannot update the requested attribute. Row ID: %fieldName = %fieldValue.',
+                        ['fieldName' => $attribute, 'fieldValue' => $quote->$method()]
+                    );
+            }
+        }
+        return null;
+    }
+
+    /**
+     * Converts an input string from snake_case to upper CamelCase.
+     *
+     * @param string $input
+     * @return string
+     */
+    private function snakeCaseToUpperCamelCase($input)
+    {
+        return str_replace(' ', '', ucwords(str_replace('_', ' ', $input)));
+    }
+}
diff --git a/vendor/magento/module-negotiable-quote/Plugin/Quote/Model/QuoteAttributeValidator/AttributeValidatorInterface.php b/vendor/magento/module-negotiable-quote/Plugin/Quote/Model/QuoteAttributeValidator/AttributeValidatorInterface.php
new file mode 100644
index 000000000000..0e6fd0a0ac47
--- /dev/null
+++ b/vendor/magento/module-negotiable-quote/Plugin/Quote/Model/QuoteAttributeValidator/AttributeValidatorInterface.php
@@ -0,0 +1,32 @@
+<?php
+/************************************************************************
+ * ADOBE CONFIDENTIAL
+ *
+ * Copyright 2023 Adobe
+ * All Rights Reserved.
+ *
+ * NOTICE: All information contained herein is, and remains
+ * the property of Adobe and its suppliers, if any. The intellectual
+ * and technical concepts contained herein are proprietary to Adobe
+ * and its suppliers and are protected by all applicable intellectual
+ * property laws, including trade secret and copyright laws.
+ * Dissemination of this information or reproduction of this material
+ * is strictly forbidden unless prior written permission is obtained
+ * from Adobe.
+ * ************************************************************************
+ */
+declare(strict_types=1);
+
+namespace Magento\NegotiableQuote\Plugin\Quote\Model\QuoteAttributeValidator;
+
+interface AttributeValidatorInterface
+{
+    /**
+     * Validate new value of the attribute.
+     *
+     * @param mixed $oldValue
+     * @param mixed $newValue
+     * @return bool
+     */
+    public function validate($oldValue, $newValue): bool;
+}
diff --git a/vendor/magento/module-negotiable-quote/Plugin/Quote/Model/QuoteAttributeValidator/ValidateStoreId.php b/vendor/magento/module-negotiable-quote/Plugin/Quote/Model/QuoteAttributeValidator/ValidateStoreId.php
new file mode 100644
index 000000000000..f0d0f852ff61
--- /dev/null
+++ b/vendor/magento/module-negotiable-quote/Plugin/Quote/Model/QuoteAttributeValidator/ValidateStoreId.php
@@ -0,0 +1,53 @@
+<?php
+/************************************************************************
+ * ADOBE CONFIDENTIAL
+ *
+ * Copyright 2023 Adobe
+ * All Rights Reserved.
+ *
+ * NOTICE: All information contained herein is, and remains
+ * the property of Adobe and its suppliers, if any. The intellectual
+ * and technical concepts contained herein are proprietary to Adobe
+ * and its suppliers and are protected by all applicable intellectual
+ * property laws, including trade secret and copyright laws.
+ * Dissemination of this information or reproduction of this material
+ * is strictly forbidden unless prior written permission is obtained
+ * from Adobe.
+ * ************************************************************************
+ */
+declare(strict_types=1);
+
+namespace Magento\NegotiableQuote\Plugin\Quote\Model\QuoteAttributeValidator;
+
+class ValidateStoreId implements AttributeValidatorInterface
+{
+    /**
+     * @var \Magento\Store\Model\StoreManagerInterface
+     */
+    private $storeManager;
+
+    /**
+     * @param \Magento\Store\Model\StoreManagerInterface $storeManager
+     */
+    public function __construct(
+        \Magento\Store\Model\StoreManagerInterface $storeManager
+    ) {
+        $this->storeManager = $storeManager;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function validate($oldStoreId, $newStoreId): bool
+    {
+        try {
+            $storeGroup = $this->storeManager->getStore($oldStoreId)->getStoreGroupId();
+            if ($storeGroup !== $this->storeManager->getStore($newStoreId)->getStoreGroupId()) {
+                return false;
+            }
+            return true;
+        } catch (\Exception $e) {
+            return false;
+        }
+    }
+}
diff --git a/vendor/magento/module-negotiable-quote/Plugin/Quote/Model/QuoteUpdateValidator.php b/vendor/magento/module-negotiable-quote/Plugin/Quote/Model/QuoteUpdateValidator.php
index 5c82c442dda7..862daafa927d 100644
--- a/vendor/magento/module-negotiable-quote/Plugin/Quote/Model/QuoteUpdateValidator.php
+++ b/vendor/magento/module-negotiable-quote/Plugin/Quote/Model/QuoteUpdateValidator.php
@@ -62,12 +62,14 @@ class QuoteUpdateValidator
      * @param \Magento\NegotiableQuote\Api\NegotiableQuoteRepositoryInterface $negotiableQuoteRepository
      * @param ValidatorInterfaceFactory $validatorFactory
      * @param CartExtensionFactory $cartExtensionFactory
+     * @param QuoteAttributeValidator $quoteAttributeValidator
      */
     public function __construct(
         \Magento\Quote\Model\ResourceModel\Quote\CollectionFactory $quoteCollectionFactory,
         \Magento\NegotiableQuote\Api\NegotiableQuoteRepositoryInterface $negotiableQuoteRepository,
         ValidatorInterfaceFactory $validatorFactory,
-        CartExtensionFactory $cartExtensionFactory
+        CartExtensionFactory $cartExtensionFactory,
+        private readonly QuoteAttributeValidator $quoteAttributeValidator
     ) {
         $this->quoteCollectionFactory = $quoteCollectionFactory;
         $this->negotiableQuoteRepository = $negotiableQuoteRepository;
@@ -180,31 +182,15 @@ private function validateQuoteAttributes(\Magento\Quote\Api\Data\CartInterface $
         $messages = [];
         $initialQuote = $this->getQuote($quote->getId());
         foreach ($this->attributes as $attribute) {
-            $method = 'get'
-                . $this->snakeCaseToUpperCamelCase($attribute);
-
-            if ($quote->$method() && $initialQuote->$method() != $quote->$method()) {
-                $messages[] = __(
-                    'You cannot update the requested attribute. Row ID: %fieldName = %fieldValue.',
-                    ['fieldName' => $attribute, 'fieldValue' => $quote->$method()]
-                );
+            $message = $this->quoteAttributeValidator->validate($attribute, $initialQuote, $quote);
+            if ($message) {
+                $messages[] = $message;
             }
         }
 
         return $messages;
     }
 
-    /**
-     * Converts an input string from snake_case to upper CamelCase.
-     *
-     * @param string $input
-     * @return string
-     */
-    private function snakeCaseToUpperCamelCase($input)
-    {
-        return str_replace(' ', '', ucwords(str_replace('_', ' ', $input)));
-    }
-
     /**
      * Check if shipping method is set in case shipping price is being updated.
      *
diff --git a/vendor/magento/module-negotiable-quote/etc/di.xml b/vendor/magento/module-negotiable-quote/etc/di.xml
index fbeb61714c36..4886c1194db0 100644
--- a/vendor/magento/module-negotiable-quote/etc/di.xml
+++ b/vendor/magento/module-negotiable-quote/etc/di.xml
@@ -344,4 +344,11 @@
     <type name="Magento\NegotiableQuote\Block\Order\Info\CreationInfo">
         <plugin name="creationInfoPlugin" type="Magento\NegotiableQuote\Plugin\Sales\Block\Order\Info\CreationInfoPlugin" sortOrder="10" />
     </type>
+    <type name="Magento\NegotiableQuote\Plugin\Quote\Model\QuoteAttributeValidator">
+        <arguments>
+            <argument name="attributeValidator" xsi:type="array">
+                <item name="store_id" xsi:type="object">Magento\NegotiableQuote\Plugin\Quote\Model\QuoteAttributeValidator\ValidateStoreId</item>
+            </argument>
+        </arguments>
+    </type>
 </config>