diff --git a/.gitignore b/.gitignore
index 8b68604..9dfd37d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -25,8 +25,8 @@ packages/
 */appSettings.json
 api_referece/*
 .sonarqube/
-*.html
 *.cobertura.xml
 integration-test-report_*.html
 *.zip
-.trx
\ No newline at end of file
+.trx
+*.html
\ No newline at end of file
diff --git a/Contentstack.Management.Core.Tests/IntegrationTest/Contentstack005_BranchTest.cs b/Contentstack.Management.Core.Tests/IntegrationTest/Contentstack005_BranchTest.cs
index 6f0722e..430dbe5 100644
--- a/Contentstack.Management.Core.Tests/IntegrationTest/Contentstack005_BranchTest.cs
+++ b/Contentstack.Management.Core.Tests/IntegrationTest/Contentstack005_BranchTest.cs
@@ -193,7 +193,7 @@ public void Test008_Should_Fetch_Created_Branch()
                 Assert.Inconclusive("Test004 did not create branch — skipping.");
             try
             {
-                ContentstackResponse response = _stack.Branch(_createdBranchUid).Fetch();
+                ContentstackResponse response = RetryOnBranchProvisioning(() => _stack.Branch(_createdBranchUid).Fetch());
                 var json = response.OpenJsonObjectResponse();
                 AssertLogger.IsNotNull(json, "response");
             }
@@ -212,7 +212,7 @@ public async Task Test009_Should_Fetch_Created_Branch_Async()
                 Assert.Inconclusive("Test005 did not create branch — skipping.");
             try
             {
-                ContentstackResponse response = await _stack.Branch(_createdBranchUidAsync).FetchAsync();
+                ContentstackResponse response = await RetryOnBranchProvisioningAsync(() => _stack.Branch(_createdBranchUidAsync).FetchAsync());
                 var json = response.OpenJsonObjectResponse();
                 AssertLogger.IsNotNull(json, "response");
             }
@@ -235,7 +235,7 @@ public void Test010_Should_Delete_Branch()
             {
                 var force = new ParameterCollection();
                 force.Add("force", true);
-                ContentstackResponse response = _stack.Branch(_createdBranchUid).Delete(force);
+                ContentstackResponse response = RetryOnBranchProvisioning(() => _stack.Branch(_createdBranchUid).Delete(force));
                 var json = response.OpenJsonObjectResponse();
                 AssertLogger.IsNotNull(json, "response");
                 _createdBranchUid = null;
@@ -257,7 +257,7 @@ public async Task Test011_Should_Delete_Branch_Async()
             {
                 var force = new ParameterCollection();
                 force.Add("force", true);
-                ContentstackResponse response = await _stack.Branch(_createdBranchUidAsync).DeleteAsync(force);
+                ContentstackResponse response = await RetryOnBranchProvisioningAsync(() => _stack.Branch(_createdBranchUidAsync).DeleteAsync(force));
                 var json = response.OpenJsonObjectResponse();
                 AssertLogger.IsNotNull(json, "response");
                 _createdBranchUidAsync = null;
@@ -268,6 +268,51 @@ public async Task Test011_Should_Delete_Branch_Async()
             }
         }
 
+        // ---- Branch provisioning retry helpers ---------------------------------
+        // Branch creation is async server-side: POST /branches returns 201 immediately
+        // with `"deleted_at": "in-progress"` while the branch is still being provisioned.
+        // Fetch/Delete against a branch in that state returns a 422 "branch is not valid"
+        // error until the provisioning job completes, so retry with backoff instead of
+        // failing on the first attempt.
+
+        private static bool IsBranchProvisioningError(ContentstackErrorException ex)
+        {
+            return ex.StatusCode == (HttpStatusCode)422 && ex.Message != null &&
+                (ex.Message.Contains("Failed to fetch Branch") || ex.Message.Contains("Branch delete failed") || ex.Message.Contains("is not valid"));
+        }
+
+        private static ContentstackResponse RetryOnBranchProvisioning(Func<ContentstackResponse> action, int maxAttempts = 6, int delayMs = 1000)
+        {
+            for (int attempt = 1; attempt < maxAttempts; attempt++)
+            {
+                try
+                {
+                    return action();
+                }
+                catch (ContentstackErrorException ex) when (IsBranchProvisioningError(ex))
+                {
+                    Task.Delay(delayMs).Wait();
+                }
+            }
+            return action();
+        }
+
+        private static async Task<ContentstackResponse> RetryOnBranchProvisioningAsync(Func<Task<ContentstackResponse>> action, int maxAttempts = 6, int delayMs = 1000)
+        {
+            for (int attempt = 1; attempt < maxAttempts; attempt++)
+            {
+                try
+                {
+                    return await action();
+                }
+                catch (ContentstackErrorException ex) when (IsBranchProvisioningError(ex))
+                {
+                    await Task.Delay(delayMs);
+                }
+            }
+            return await action();
+        }
+
         // ---- SDK validation tests (no API call) --------------------------------
 
         [TestMethod]
diff --git a/Contentstack.Management.Core.Tests/Mock/extension.html b/Contentstack.Management.Core.Tests/Mock/extension.html
new file mode 100644
index 0000000..777e673
--- /dev/null
+++ b/Contentstack.Management.Core.Tests/Mock/extension.html
@@ -0,0 +1,27 @@
+<html>
+<head>
+    <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
+    <script
+        src="https://unpkg.com/@contentstack/ui-extensions-sdk@2.2.3/dist/ui-extension-sdk.js"
+        integrity="sha512-LMktiFAj7j/AUFctMlgY8qmLrLIQVctwwCsnCXIWnvgF9JlanilvFbZxOCtPNB5eO3vp2Nhw9ED1UsWa+ltSvQ=="
+        crossorigin="anonymous"
+    ></script>
+    <link
+        rel="stylesheet"
+        type="text/css"
+        href="https://unpkg.com/@contentstack/ui-extensions-sdk/dist/ui-extension-sdk.css"
+        integrity="sha512-yPPI/jWiqPr0HIh+1A2QPP5p58sSYqbPoBykxIuBckT1vzGwNbrOmwYM03qGI4ffnxd7q4kkoDys0kdZzxYn9A=="
+        crossorigin="anonymous"
+    />
+</head>
+<body>
+    <div id="extension-container"></div>
+    <script>
+      ContentstackUIExtension.init().then(function(extension) {
+          extension.window.updateHeight(200);
+      }).catch(function(error) {
+          console.log(error);
+      });
+    </script>
+</body>
+</html>