new updates

Frontend/erp-system/lib/validations/master-data.ts

@@ -73,6 +73,14 @@ export function validateBrandName(name: string): Record<string, string> {
   return errors
 }
 
+export function validateTaxRate(code: string, name: string, percentage: number): Record<string, string> {
+  const errors: Record<string, string> = {}
+  if (!code.trim()) errors.code = "Code is required"
+  if (!name.trim()) errors.name = "Name is required"
+  if (Number.isNaN(percentage) || percentage < 0 || percentage > 100) errors.percentage = "Percentage must be between 0 and 100"
+  return errors
+}
+
 /** Renamed from validateVariantCategoryName — "variant categories" are Item Types now. */
 export function validateItemTypeName(name: string): Record<string, string> {
   const errors: Record<string, string> = {}