fix: assigning values to rows in sales register reports (#26546)

* fix: assigning values to rows in sales register reports

* fix: check for is_internal_customer for unrealized_profit_loss_account
diff --git a/erpnext/accounts/doctype/sales_invoice/sales_invoice.json b/erpnext/accounts/doctype/sales_invoice/sales_invoice.json
index 7dfe77d..b65b101 100644
--- a/erpnext/accounts/doctype/sales_invoice/sales_invoice.json
+++ b/erpnext/accounts/doctype/sales_invoice/sales_invoice.json
@@ -1934,6 +1934,7 @@
    "description": "Unrealized Profit / Loss account for intra-company transfers",
    "fieldname": "unrealized_profit_loss_account",
    "fieldtype": "Link",
+   "ignore_user_permissions": 1,
    "label": "Unrealized Profit / Loss Account",
    "options": "Account"
   },
diff --git a/erpnext/accounts/report/item_wise_sales_register/item_wise_sales_register.py b/erpnext/accounts/report/item_wise_sales_register/item_wise_sales_register.py
index 2e794da..08065a2 100644
--- a/erpnext/accounts/report/item_wise_sales_register/item_wise_sales_register.py
+++ b/erpnext/accounts/report/item_wise_sales_register/item_wise_sales_register.py
@@ -76,7 +76,7 @@
 			'company': d.company,
 			'sales_order': d.sales_order,
 			'delivery_note': d.delivery_note,
-			'income_account': d.unrealized_profit_loss_account or d.income_account,
+			'income_account': d.unrealized_profit_loss_account if d.is_internal_customer == 1 else d.income_account,
 			'cost_center': d.cost_center,
 			'stock_qty': d.stock_qty,
 			'stock_uom': d.stock_uom
@@ -380,6 +380,7 @@
 			`tabSales Invoice Item`.name, `tabSales Invoice Item`.parent,
 			`tabSales Invoice`.posting_date, `tabSales Invoice`.debit_to,
 			`tabSales Invoice`.unrealized_profit_loss_account,
+			`tabSales Invoice`.is_internal_customer,
 			`tabSales Invoice`.project, `tabSales Invoice`.customer, `tabSales Invoice`.remarks,
 			`tabSales Invoice`.territory, `tabSales Invoice`.company, `tabSales Invoice`.base_net_total,
 			`tabSales Invoice Item`.item_code, `tabSales Invoice Item`.description,
diff --git a/erpnext/accounts/report/sales_register/sales_register.py b/erpnext/accounts/report/sales_register/sales_register.py
index 9099593..f38bd78 100644
--- a/erpnext/accounts/report/sales_register/sales_register.py
+++ b/erpnext/accounts/report/sales_register/sales_register.py
@@ -84,7 +84,7 @@
 		# Add amount in unrealized account
 		for account in unrealized_profit_loss_accounts:
 			row.update({
-				frappe.scrub(account): flt(internal_invoice_map.get((inv.name, account)))
+				frappe.scrub(account+"_unrealized"): flt(internal_invoice_map.get((inv.name, account)))
 			})
 
 		# net total
@@ -258,6 +258,7 @@
 
 		unrealized_profit_loss_accounts = frappe.db.sql_list("""SELECT distinct unrealized_profit_loss_account
 			from `tabSales Invoice` where docstatus = 1 and name in (%s)
+			and is_internal_customer = 1
 			and ifnull(unrealized_profit_loss_account, '') != ''
 			order by unrealized_profit_loss_account""" %
 			', '.join(['%s']*len(invoice_list)), tuple(inv.name for inv in invoice_list))
@@ -284,7 +285,7 @@
 	for account in unrealized_profit_loss_accounts:
 		unrealized_profit_loss_account_columns.append({
 			"label": account,
-			"fieldname": frappe.scrub(account),
+			"fieldname": frappe.scrub(account+"_unrealized"),
 			"fieldtype": "Currency",
 			"options": "currency",
 			"width": 120