initial

code/schema.json

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+{
+    "$schema": "http://json-schema.org/draft-07/schema#",
+    "title": "Invoice Data Schema",
+    "description": "A schema to validate invoice data",
+    "type": "object",
+    "properties": {
+        "customer_identifier": {
+            "description": "The customer's name. e.g., ABC Corporation, Microsoft, etc.",
+            "type": "string"
+        },
+        "date": {
+            "description": "Invoice date in ISO 8601 format (YYYY-MM-DD).",
+            "type": "string",
+            "format": "date"
+        },
+        "invoice_number": {
+            "description": "Unique invoice number for the transaction.",
+            "type": "string"
+        },
+        "account_number": {
+            "description": "Customer's account number associated with the invoice.",
+            "type": "string"
+        },
+        "total": {
+            "description": "Total amount of the invoice, including taxes and fees. It should be a decimal number as a string.",
+            "type": "string",
+            "pattern": "^\\d+(\\.\\d{1,2})?$" 
+        }
+    },
+    "required": ["customer_identifier", "date", "invoice_number", "account_number", "total"],
+    "additionalProperties": false
+}