diff --git a/erpnext/accounts/doctype/accounting_dimension_filter/accounting_dimension_filter.json b/erpnext/accounts/doctype/accounting_dimension_filter/accounting_dimension_filter.json
index 2bd6c12a0a3..260bcd11db5 100644
--- a/erpnext/accounts/doctype/accounting_dimension_filter/accounting_dimension_filter.json
+++ b/erpnext/accounts/doctype/accounting_dimension_filter/accounting_dimension_filter.json
@@ -7,6 +7,7 @@
  "engine": "InnoDB",
  "field_order": [
   "accounting_dimension",
+  "fieldname",
   "disabled",
   "column_break_2",
   "company",
@@ -90,11 +91,17 @@
    "fieldname": "apply_restriction_on_values",
    "fieldtype": "Check",
    "label": "Apply restriction on dimension values"
+  },
+  {
+   "fieldname": "fieldname",
+   "fieldtype": "Data",
+   "hidden": 1,
+   "label": "Fieldname"
   }
  ],
  "index_web_pages_for_search": 1,
  "links": [],
- "modified": "2023-06-07 14:59:41.869117",
+ "modified": "2025-08-08 14:13:22.203011",
  "modified_by": "Administrator",
  "module": "Accounts",
  "name": "Accounting Dimension Filter",
@@ -139,8 +146,8 @@
   }
  ],
  "quick_entry": 1,
- "sort_field": "modified",
+ "sort_field": "creation",
  "sort_order": "DESC",
  "states": [],
  "track_changes": 1
-}
\ No newline at end of file
+}
diff --git a/erpnext/accounts/doctype/accounting_dimension_filter/accounting_dimension_filter.py b/erpnext/accounts/doctype/accounting_dimension_filter/accounting_dimension_filter.py
index 7c843cf552e..040583a2847 100644
--- a/erpnext/accounts/doctype/accounting_dimension_filter/accounting_dimension_filter.py
+++ b/erpnext/accounts/doctype/accounting_dimension_filter/accounting_dimension_filter.py
@@ -17,17 +17,16 @@ class AccountingDimensionFilter(Document):
 		from frappe.types import DF
 
 		from erpnext.accounts.doctype.allowed_dimension.allowed_dimension import AllowedDimension
-		from erpnext.accounts.doctype.applicable_on_account.applicable_on_account import (
-			ApplicableOnAccount,
-		)
+		from erpnext.accounts.doctype.applicable_on_account.applicable_on_account import ApplicableOnAccount
 
-		accounting_dimension: DF.Literal
+		accounting_dimension: DF.Literal[None]
 		accounts: DF.Table[ApplicableOnAccount]
 		allow_or_restrict: DF.Literal["Allow", "Restrict"]
 		apply_restriction_on_values: DF.Check
 		company: DF.Link
 		dimensions: DF.Table[AllowedDimension]
 		disabled: DF.Check
+		fieldname: DF.Data | None
 	# end: auto-generated types
 
 	def before_save(self):
@@ -37,6 +36,10 @@ class AccountingDimensionFilter(Document):
 			self.set("dimensions", [])
 
 	def validate(self):
+		self.fieldname = frappe.db.get_value(
+			"Accounting Dimension", {"document_type": self.accounting_dimension}, "fieldname"
+		) or frappe.scrub(self.accounting_dimension)  # scrub to handle default accounting dimension
+
 		self.validate_applicable_accounts()
 
 	def validate_applicable_accounts(self):
@@ -72,7 +75,7 @@ def get_dimension_filter_map():
 			"""
 			SELECT
 				a.applicable_on_account, d.dimension_value, p.accounting_dimension,
-				p.allow_or_restrict, a.is_mandatory
+				p.allow_or_restrict, p.fieldname, a.is_mandatory
 			FROM
 				`tabApplicable On Account` a,
 				`tabAccounting Dimension Filter` p
@@ -87,8 +90,6 @@ def get_dimension_filter_map():
 		dimension_filter_map = {}
 
 		for f in filters:
-			f.fieldname = scrub(f.accounting_dimension)
-
 			build_map(
 				dimension_filter_map,
 				f.fieldname,
diff --git a/erpnext/patches.txt b/erpnext/patches.txt
index 1087f64276d..ae52e1e3a09 100644
--- a/erpnext/patches.txt
+++ b/erpnext/patches.txt
@@ -420,3 +420,4 @@ erpnext.patches.v15_0.repost_gl_entries_with_no_account_subcontracting #2025-08-
 execute:frappe.db.set_single_value("Accounts Settings", "fetch_valuation_rate_for_internal_transaction", 1)
 erpnext.patches.v15_0.add_company_payment_gateway_account
 erpnext.patches.v15_0.update_uae_zero_rated_fetch
+erpnext.patches.v15_0.update_fieldname_in_accounting_dimension_filter
diff --git a/erpnext/patches/v15_0/update_fieldname_in_accounting_dimension_filter.py b/erpnext/patches/v15_0/update_fieldname_in_accounting_dimension_filter.py
new file mode 100644
index 00000000000..25a35bc87fc
--- /dev/null
+++ b/erpnext/patches/v15_0/update_fieldname_in_accounting_dimension_filter.py
@@ -0,0 +1,36 @@
+import frappe
+from frappe.query_builder import DocType
+
+
+def execute():
+	default_accounting_dimension()
+	ADF = DocType("Accounting Dimension Filter")
+	AD = DocType("Accounting Dimension")
+
+	accounting_dimension_filter = (
+		frappe.qb.from_(ADF)
+		.join(AD)
+		.on(AD.document_type == ADF.accounting_dimension)
+		.select(ADF.name, AD.fieldname, ADF.accounting_dimension)
+	).run(as_dict=True)
+
+	for doc in accounting_dimension_filter:
+		value = doc.fieldname or frappe.scrub(doc.accounting_dimension)
+		frappe.db.set_value(
+			"Accounting Dimension Filter",
+			doc.name,
+			"fieldname",
+			value,
+			update_modified=False,
+		)
+
+
+def default_accounting_dimension():
+	ADF = DocType("Accounting Dimension Filter")
+	for dim in ("Cost Center", "Project"):
+		(
+			frappe.qb.update(ADF)
+			.set(ADF.fieldname, frappe.scrub(dim))
+			.where(ADF.accounting_dimension == dim)
+			.run()
+		)