diff --git a/lms/lms/doctype/lms_batch/lms_batch.py b/lms/lms/doctype/lms_batch/lms_batch.py
index 3c6e034f..cff87d28 100644
--- a/lms/lms/doctype/lms_batch/lms_batch.py
+++ b/lms/lms/doctype/lms_batch/lms_batch.py
@@ -245,6 +245,10 @@ def fetch_lessons(courses):
 @frappe.whitelist()
 def add_course(course, parent, name=None, evaluator=None):
 	frappe.only_for("Moderator")
+
+	if frappe.db.exists("Batch Course", {"course": course, "parent": parent}):
+		frappe.throw(_("Course already added to the batch."))
+
 	if name:
 		doc = frappe.get_doc("Batch Course", name)
 	else:
diff --git a/lms/patches.txt b/lms/patches.txt
index 19f9a649..ef457315 100644
--- a/lms/patches.txt
+++ b/lms/patches.txt
@@ -68,4 +68,5 @@ lms.patches.v1_0.rename_lms_batch_membership_doctype
 lms.patches.v1_0.rename_lms_class_to_lms_batch
 lms.patches.v1_0.rename_classes_in_navbar
 lms.patches.v1_0.publish_batches
-lms.patches.v1_0.publish_certificates
\ No newline at end of file
+lms.patches.v1_0.publish_certificates
+lms.patches.v1_0.change_naming_for_batch_course #14-09-2023
\ No newline at end of file
diff --git a/lms/patches/v1_0/change_naming_for_batch_course.py b/lms/patches/v1_0/change_naming_for_batch_course.py
new file mode 100644
index 00000000..7a93720c
--- /dev/null
+++ b/lms/patches/v1_0/change_naming_for_batch_course.py
@@ -0,0 +1,6 @@
+import frappe
+
+
+def execute():
+	frappe.db.create_sequence("Batch Course", check_not_exists=True)
+	frappe.db.set_next_sequence_val("Batch Course", 500, is_val_used=False)
diff --git a/lms/www/batches/batch_details.js b/lms/www/batches/batch_details.js
index 19d718bc..92070ece 100644
--- a/lms/www/batches/batch_details.js
+++ b/lms/www/batches/batch_details.js
@@ -31,6 +31,7 @@ const show_course_modal = (e) => {
 				reqd: 1,
 				only_select: 1,
 				default: course || "",
+				read_only: course ? 1 : 0,
 			},
 			{
 				fieldtype: "Link",