diff --git a/erpnext/assets/doctype/asset/asset.js b/erpnext/assets/doctype/asset/asset.js
index 55c71729bd8..e0b4593416a 100644
--- a/erpnext/assets/doctype/asset/asset.js
+++ b/erpnext/assets/doctype/asset/asset.js
@@ -80,6 +80,12 @@ frappe.ui.form.on("Asset", {
 		}
 	},
 
+	before_submit: function (frm) {
+		if (frm.doc.is_composite_asset && !frm.has_active_capitalization) {
+			frappe.throw(__("Please capitalize this asset before submitting."));
+		}
+	},
+
 	refresh: function (frm) {
 		frappe.ui.form.trigger("Asset", "is_existing_asset");
 		frm.toggle_display("next_depreciation_date", frm.doc.docstatus < 1);
@@ -196,9 +202,10 @@ frappe.ui.form.on("Asset", {
 						asset: frm.doc.name,
 					},
 					callback: function (r) {
+						frm.has_active_capitalization = r.message;
+
 						if (!r.message) {
-							$(".primary-action").prop("hidden", true);
-							$(".form-message").text(__("Capitalize this asset to confirm"));
+							$(".form-message").text(__("Capitalize this asset before submitting."));
 
 							frm.add_custom_button(__("Capitalize Asset"), function () {
 								frm.trigger("create_asset_capitalization");
@@ -470,7 +477,6 @@ frappe.ui.form.on("Asset", {
 	is_composite_asset: function (frm) {
 		if (frm.doc.is_composite_asset) {
 			frm.set_value("net_purchase_amount", 0);
-			frm.set_df_property("net_purchase_amount", "read_only", 1);
 		} else {
 			frm.set_df_property("net_purchase_amount", "read_only", 0);
 		}
@@ -538,7 +544,6 @@ frappe.ui.form.on("Asset", {
 			callback: function (r) {
 				var doclist = frappe.model.sync(r.message);
 				frappe.set_route("Form", doclist[0].doctype, doclist[0].name);
-				$(".primary-action").prop("hidden", false);
 			},
 		});
 	},
diff --git a/erpnext/assets/doctype/asset/asset.json b/erpnext/assets/doctype/asset/asset.json
index af4d8f281e2..832f7c18e68 100644
--- a/erpnext/assets/doctype/asset/asset.json
+++ b/erpnext/assets/doctype/asset/asset.json
@@ -556,7 +556,8 @@
    "fieldtype": "Currency",
    "label": "Net Purchase Amount",
    "mandatory_depends_on": "eval:(!doc.is_composite_asset || doc.docstatus==1)",
-   "options": "Company:company:default_currency"
+   "options": "Company:company:default_currency",
+   "read_only_depends_on": "eval: doc.is_composite_asset"
   }
  ],
  "idx": 72,
@@ -600,7 +601,7 @@
    "link_fieldname": "target_asset"
   }
  ],
- "modified": "2025-11-04 22:39:00.817405",
+ "modified": "2025-12-18 16:36:40.904246",
  "modified_by": "Administrator",
  "module": "Assets",
  "name": "Asset",
diff --git a/erpnext/assets/doctype/asset/asset.py b/erpnext/assets/doctype/asset/asset.py
index a1948a89295..a29ea9ef07b 100644
--- a/erpnext/assets/doctype/asset/asset.py
+++ b/erpnext/assets/doctype/asset/asset.py
@@ -243,6 +243,10 @@ class Asset(AccountsController):
 		self.validate_expected_value_after_useful_life()
 		self.set_total_booked_depreciations()
 
+	def before_submit(self):
+		if self.is_composite_asset and not has_active_capitalization(self.name):
+			frappe.throw(_("Please capitalize this asset before submitting."))
+
 	def on_submit(self):
 		self.validate_in_use_date()
 		self.make_asset_movement()