Error Handling

When something goes wrong, Apper returns a consistent error format:

{
  "success": false,
  "message": "Field 'Email' is required",
  "data": null
}

Common Errors and Solutions

Error Message	What It Means	How to Fix
"Unauthorized"	Invalid API key	Check your Authorization header and API key.
"Field 'X' is required"	Missing mandatory data	Include the missing required field in your request body.
"Invalid field type"	Wrong data format	Check the Field Value Formats and match the type.
"Record does not exist"	ID doesn't exist	Verify the recordId or appId in your URL.
"Unknown field X provided"	Field name doesn't exist	Check field name spelling (note: names are case-sensitive).

Bulk Operation Errors

For bulk operations (Create, Update, Delete), check the results array:

{
  "success": true,
  "message": "Bulk create operation completed",
  "results": [
    {
      "success": true,
      "data": {"id": 24}
    },
    {
      "success": false,
      "errors": [
        {
          "fieldName": "Email",
          "message": "Invalid email format"
        }
      ]
    }
  ]
}