diff --git a/erpnext/accounts/doctype/opening_invoice_creation_tool/opening_invoice_creation_tool.js b/erpnext/accounts/doctype/opening_invoice_creation_tool/opening_invoice_creation_tool.js
index 466b38126d7..22d977dd60f 100644
--- a/erpnext/accounts/doctype/opening_invoice_creation_tool/opening_invoice_creation_tool.js
+++ b/erpnext/accounts/doctype/opening_invoice_creation_tool/opening_invoice_creation_tool.js
@@ -70,9 +70,7 @@ frappe.ui.form.on("Opening Invoice Creation Tool", {
 			});
 		});
 
-		if (frm.doc.create_missing_party) {
-			frm.set_df_property("party", "fieldtype", "Data", frm.doc.name, "invoices");
-		}
+		frm.trigger("update_party_labels");
 	},
 
 	setup_company_filters: function (frm) {
@@ -127,7 +125,9 @@ frappe.ui.form.on("Opening Invoice Creation Tool", {
 			frappe.model.set_value(row.doctype, row.name, "party", "");
 			frappe.model.set_value(row.doctype, row.name, "party_name", "");
 		});
+		frm.clear_table("invoices");
 		frm.refresh_fields();
+		frm.trigger("update_party_labels");
 	},
 
 	make_dashboard: function (frm) {
@@ -175,6 +175,32 @@ frappe.ui.form.on("Opening Invoice Creation Tool", {
 		}
 		frm.refresh_field("invoices");
 	},
+
+	update_party_labels: function (frm) {
+		let is_sales = frm.doc.invoice_type == "Sales";
+
+		frm.fields_dict["invoices"].grid.update_docfield_property(
+			"party",
+			"label",
+			is_sales ? "Customer ID" : "Supplier ID"
+		);
+		frm.fields_dict["invoices"].grid.update_docfield_property(
+			"party_name",
+			"label",
+			is_sales ? "Customer Name" : "Supplier Name"
+		);
+
+		frm.set_df_property(
+			"create_missing_party",
+			"description",
+			is_sales
+				? __("If party does not exist, create it using the Customer Name field.")
+				: __("If party does not exist, create it using the Supplier Name field.")
+		);
+
+		frm.refresh_field("invoices");
+		frm.refresh_field("create_missing_party");
+	},
 });
 
 frappe.ui.form.on("Opening Invoice Creation Tool Item", {
diff --git a/erpnext/accounts/doctype/opening_invoice_creation_tool/opening_invoice_creation_tool.json b/erpnext/accounts/doctype/opening_invoice_creation_tool/opening_invoice_creation_tool.json
index 8d1c3e87ba1..535b7384b4d 100644
--- a/erpnext/accounts/doctype/opening_invoice_creation_tool/opening_invoice_creation_tool.json
+++ b/erpnext/accounts/doctype/opening_invoice_creation_tool/opening_invoice_creation_tool.json
@@ -7,10 +7,11 @@
  "editable_grid": 1,
  "engine": "InnoDB",
  "field_order": [
+  "section_break_ynel",
   "company",
+  "create_missing_party",
   "column_break_3",
   "invoice_type",
-  "create_missing_party",
   "accounting_dimensions_section",
   "cost_center",
   "dimension_col_break",
@@ -25,11 +26,11 @@
    "in_list_view": 1,
    "label": "Company",
    "options": "Company",
+   "remember_last_selected_value": 1,
    "reqd": 1
   },
   {
    "default": "0",
-   "description": "If party does not exist, create it using the Party Name field.",
    "fieldname": "create_missing_party",
    "fieldtype": "Check",
    "label": "Create Missing Party"
@@ -79,12 +80,17 @@
   {
    "fieldname": "dimension_col_break",
    "fieldtype": "Column Break"
+  },
+  {
+   "fieldname": "section_break_ynel",
+   "fieldtype": "Section Break",
+   "hide_border": 1
   }
  ],
  "hide_toolbar": 1,
  "issingle": 1,
  "links": [],
- "modified": "2026-03-23 00:32:15.600086",
+ "modified": "2026-03-31 01:47:20.360352",
  "modified_by": "Administrator",
  "module": "Accounts",
  "name": "Opening Invoice Creation Tool",