[Solved] What is wrong with this schema fragment? { "type": "array", "items": { "type": "object", "properties": { "id": { "type": "integer" } } }, "required": ["id"] } | Rest API

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What is wrong with this schema fragment?

{
  "type": "array",
  "items": {
    "type": "object",
    "properties": {
      "id": { "type": "integer" }
    }
  },
  "required": ["id"]
}

A"type" cannot be "array" here

B"required" should be inside "items", not outside

C"items" must be an array, not an object

D"id" type should be "string"

Step-by-Step Solution

Solution:

Step 1: Understand placement of "required" keyword
"required" applies to object properties, so it must be inside the object schema.
Step 2: Identify the error location
Here, "required" is outside "items", which is incorrect.
Final Answer:
"required" should be inside "items", not outside -> Option B
Quick Check:
Required properties belong inside object schema [OK]

Quick Trick: "required" must be inside object schema, not array schema [OK]

Common Mistakes:

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