A column is defined as using a dataset that cannot be found.

How to fix

Ensure that the dataset is either defined in the masking configuration JSON file, or is one of the built-in default datasets.

Problem example:

{
  "tables": [
    {
      "schema": "Person",
      "name": "Address",
      "columns": [
        {
          "name": "City",
          "dataset": "NonExistentCities",    // Dataset not defined anywhere
          "deterministic": false
        }
      ]
    }
  ]
}

Ensure that the dataset is either defined in the masking configuration JSON file, or is one of the built-in default datasets.

Option 1: Use a built-in dataset

{
  "tables": [
    {
      "schema": "Person",
      "name": "Address",
      "columns": [
        {
          "name": "City",
          "dataset": "Cities",               // Built-in dataset
          "deterministic": false
        }
      ]
    }
  ]
}

Option 2: Define a custom dataset

{
  "tables": [
    {
      "schema": "Person",
      "name": "Address",
      "columns": [
        {
          "name": "City",
          "dataset": "CustomCities",         // References custom dataset below
          "deterministic": false
        }
      ]
    }
  ],
  "datasets": [
    {
      "name": "CustomCities",              // Custom dataset definition
      "type": "List",
      "values": ["Seattle", "Portland", "Vancouver"]
    }
  ]
}