diff --git a/erpnext_germany/erpnext_germany/doctype/business_letter/business_letter.json b/erpnext_germany/erpnext_germany/doctype/business_letter/business_letter.json
index eeed443..ca44c4d 100644
--- a/erpnext_germany/erpnext_germany/doctype/business_letter/business_letter.json
+++ b/erpnext_germany/erpnext_germany/doctype/business_letter/business_letter.json
@@ -76,7 +76,8 @@
   {
    "fieldname": "link_title",
    "fieldtype": "Data",
-   "label": "Link Title"
+   "label": "Link Title",
+   "read_only": 1
   },
   {
    "fieldname": "link_name",
@@ -141,7 +142,7 @@
  "index_web_pages_for_search": 1,
  "is_submittable": 1,
  "links": [],
- "modified": "2024-02-05 17:35:31.350359",
+ "modified": "2024-02-05 19:07:34.724842",
  "modified_by": "Administrator",
  "module": "ERPNext Germany",
  "name": "Business Letter",
@@ -161,7 +162,9 @@
    "write": 1
   }
  ],
+ "show_title_field_in_link": 1,
  "sort_field": "modified",
  "sort_order": "DESC",
- "states": []
+ "states": [],
+ "title_field": "subject_preview"
 }
\ No newline at end of file
diff --git a/erpnext_germany/erpnext_germany/doctype/business_letter/business_letter.py b/erpnext_germany/erpnext_germany/doctype/business_letter/business_letter.py
index 4df7991..695c6a3 100644
--- a/erpnext_germany/erpnext_germany/doctype/business_letter/business_letter.py
+++ b/erpnext_germany/erpnext_germany/doctype/business_letter/business_letter.py
@@ -2,13 +2,16 @@
 # For license information, please see license.txt
 
 import frappe
+from frappe import _
 from frappe.model.document import Document
+from frappe.desk.doctype.notification_log.notification_log import get_title
 
 
 class BusinessLetter(Document):
 	def before_validate(self):
 		self.set_subject_preview()
 		self.set_content_preview()
+		self.set_link_title()
 
 	def set_subject_preview(self):
 		self.subject_preview = (
@@ -20,6 +23,12 @@ def set_content_preview(self):
 			frappe.render_template(self.content, self.get_context()) if self.content else " "
 		)
 
+	def set_link_title(self):
+		if self.link_name:
+			self.link_title = get_title(self.link_document_type, self.link_name)
+		else:
+			self.link_title = None
+
 	def get_context(self):
 		address = frappe.get_doc("Address", self.address) if self.address else None
 		contact = frappe.get_doc("Contact", self.contact) if self.contact else None
@@ -33,6 +42,40 @@ def get_context(self):
 			"reference": reference,
 		}
 
+	def on_submit(self):
+		self.add_submit_comments()
+
+	def on_cancel(self):
+		self.add_cancel_comments()
+
+	def add_submit_comments(self):
+		msg = _(
+			"submitted Business Letter: <a href='/app/business-letter/{0}'><strong>{1}</strong></a>"
+		).format(self.name, self.subject_preview)
+
+		if self.contact:
+			frappe.get_doc("Contact", self.contact).add_comment("Info", msg)
+
+		if self.address:
+			frappe.get_doc("Address", self.address).add_comment("Info", msg)
+
+		if self.link_name:
+			frappe.get_doc(self.link_document_type, self.link_name).add_comment("Info", msg)
+
+	def add_cancel_comments(self):
+		msg = _(
+			"canceled Business Letter: <a href='/app/business-letter/{0}'><strong>{1}</strong></a>"
+		).format(self.name, self.subject_preview)
+
+		if self.contact:
+			frappe.get_doc("Contact", self.contact).add_comment("Info", msg)
+
+		if self.address:
+			frappe.get_doc("Address", self.address).add_comment("Info", msg)
+
+		if self.link_name:
+			frappe.get_doc(self.link_document_type, self.link_name).add_comment("Info", msg)
+
 	@frappe.whitelist()
 	def get_template(self):
 		subject = frappe.get_value("Business Letter Template", self.template, "subject")