Invalid JSON Schema Error

Try removing the :

,  "required": [    "record"  ]

So:

{  "$schema": "http://json-schema.org/draft-04/schema#",  "id": "http://example.com",  "type": "object",  "properties": {    "record": {      "id": "http://example.com/record",      "type": "array",      "items": {        "id": "http://example.com/record/0",        "type": "object",        "properties": {          "Account": {            "id": "http://example.com/record/0/Account",            "type": "string"          },          "DeptID": {            "id": "http://example.com/record/0/DeptID",            "type": "string"          },          "ProjectID": {            "id": "http://example.com/record/0/ProjectID",            "type": "string"          },          "ProjectDescription": {            "id": "http://example.com/record/0/ProjectDescription",            "type": "string"          },          "Amount": {            "id": "http://example.com/record/0/Amount",            "type": "number"          },          "CheckNo": {            "id": "http://example.com/record/0/CheckNo",            "type": "integer"          },          "Reference": {            "id": "http://example.com/record/0/Reference",            "type": "string"          },          "BudgetRef": {            "id": "http://example.com/record/0/BudgetRef",            "type": "string"          },          "Description": {            "id": "http://example.com/record/0/Description",            "type": "string"          },          "Oprid": {            "id": "http://example.com/record/0/Oprid",            "type": "string"          },          "Date": {            "id": "http://example.com/record/0/Date",            "type": "string"          }        },        "required": [          "Account",          "DeptID",          "ProjectID",          "ProjectDescription",          "Amount",          "CheckNo",          "Reference",          "BudgetRef",          "Description",          "Oprid",          "Date"        ]      }, "required": [        "items"      ]    }  }}

You cannot have JSON with required field condition for array of array, instead required can be used only for array of records

So, Please remove , "required": [ "record" ]

at the end

I am not sure about this solution, I got the same issue, I changed the id of the properties as below, it worked for me: "ZIP": { "id": "/properties/ZIP",
"type": "string" }