Merge pull request #28206 from frappe/mergify/bp/version-13-hotfix/pr-28205

fix: Error on LDC creation (backport #28205)

erpnext/regional/doctype/lower_deduction_certificate/lower_deduction_certificate.py

@@ -31,7 +31,7 @@ class LowerDeductionCertificate(Document):
 			<= fiscal_year.year_end_date):
 			frappe.throw(_("Valid Upto date not in Fiscal Year {0}").format(frappe.bold(self.fiscal_year)))
 
-	def tax_withholding_category(self):
+	def validate_supplier_against_tax_category(self):
 		duplicate_certificate = frappe.db.get_value('Lower Deduction Certificate',
 			{'supplier': self.supplier, 'tax_withholding_category': self.tax_withholding_category, 'name': ("!=", self.name)},
 			['name', 'valid_from', 'valid_upto'], as_dict=True)