### Example Validation Error Message

Source: https://github.com/microsoft/powerbi-desktop-samples/blob/main/Report Theme JSON Schema/README.md

An example of a verbose error message received when a theme definition under `visualStyles > * > *` does not match the expected pattern. This message indicates type mismatches and missing required properties.

```text
#/visualStyles/*/*/tableEx/0/* must be string,number,boolean (type; matching schema #/properties/visualStyles/additionalProperties/properties/*/patternProperties/%5E.%2B%24/items/patternProperties/%5E.%2B%24/anyOf/0/type)
#/visualStyles/*/*/tableEx/0/* must have required property 'reverseDirection' (required; matching schema #/required)
#/visualStyles/*/*/tableEx/0/* must have required property 'hideText' (required; matching schema #/required)
#/visualStyles/*/*/tableEx/0/* must NOT have additional properties (additionalProperties; matching schema #/additionalProperties)
#/visualStyles/*/*/tableEx/0/* must NOT have additional properties (additionalProperties; matching schema #/additionalProperties)
#/visualStyles/*/*/tableEx/0/* must have required property 'solid' (required; matching schema #/oneOf/0/required)
#/visualStyles/*/*/tableEx/0/* must NOT have additional properties (additionalProperties; matching schema #/oneOf/0/additionalProperties)
#/visualStyles/*/*/tableEx/0/* must NOT have additional properties (additionalProperties; matching schema #/oneOf/0/additionalProperties)
#/visualStyles/*/*/tableEx/0/* must have required property 'gradient' (required; matching schema #/oneOf/1/required)
#/visualStyles/*/*/tableEx/0/* must NOT have additional properties (additionalProperties; matching schema #/oneOf/1/additionalProperties)
[... about 30 additional lines follow]
```

--------------------------------

### Associate Power BI File Extensions with JSON in VS Code

Source: https://github.com/microsoft/powerbi-desktop-samples/blob/main/item-schemas/README.md

Configure VS Code to recognize specific Power BI file extensions as JSON files, enabling syntax highlighting and basic JSON features.

```json
{
    "files.associations": {
        "*.pbir": "json"
        ,
        "*.pbidataset": "json"
        ,
        "*.pbip": "json"
      }
}
```

--------------------------------

### Configure VS Code for Power BI JSON Schemas

Source: https://github.com/microsoft/powerbi-desktop-samples/blob/main/item-schemas/README.md

Add this configuration to your VS Code User settings.json to enable schema validation and Intellisense for various Power BI file types.

```json
{
    "json.schemas": [
        {
            "fileMatch": [
                "*.pbidataset"
            ],
            "url": "https://raw.githubusercontent.com/microsoft/powerbi-desktop-samples/main/item-schemas/dataset/definition.pbidataset-1.0.json"
        }
        ,
        {
            "fileMatch": [
                "/*.Dataset/.pbi/editorSettings.json"
            ],
            "url": "https://raw.githubusercontent.com/microsoft/powerbi-desktop-samples/main/item-schemas/dataset/editorSettings-1.0.json"
        }
        ,
        {
            "fileMatch": [
                "/*.Dataset/.pbi/localsettings.json"
            ],
            "url": "https://raw.githubusercontent.com/microsoft/powerbi-desktop-samples/main/item-schemas/dataset/localSettings-1.0.json"
        }
        ,
        {
            "fileMatch": [
                "/*.Dataset/.pbi/unappliedchanges.json"
            ],
            "url": "https://raw.githubusercontent.com/microsoft/powerbi-desktop-samples/main/item-schemas/dataset/unappliedChanges-1.0.json"
        }
        ,
        {
            "fileMatch": [
                "*.pbir"
            ],
            "url": "https://raw.githubusercontent.com/microsoft/powerbi-desktop-samples/main/item-schemas/report/definition.pbir-1.0.json"
        }
        ,
        {
            "fileMatch": [
                "/*.Report/.pbi/localsettings.json"
            ],
            "url": "https://raw.githubusercontent.com/microsoft/powerbi-desktop-samples/main/item-schemas/report/localSettings-1.0.json"
        }
        ,
        {
            "fileMatch": [
                "*.pbip"
            ],
            "url": "https://raw.githubusercontent.com/microsoft/powerbi-desktop-samples/main/item-schemas/common/pbip-1.0.json"
        }
        ,
        {
            "fileMatch": [
                "/*.Report/item.config.json"
                ,
                "/*.Dataset/item.config.json"
            ],
            "url": "https://raw.githubusercontent.com/microsoft/powerbi-desktop-samples/main/item-schemas/common/item.config-1.0.json"
        }
        ,
        {
            "fileMatch": [
                "/*.Report/item.metadata.json"
                ,
                "/*.Dataset/item.metadata.json"
            ],
            "url": "https://raw.githubusercontent.com/microsoft/powerbi-desktop-samples/main/item-schemas/common/item.metadata-1.0.json"
        }
    ]
}
```

--------------------------------

### Theme Data Color Expression

Source: https://github.com/microsoft/powerbi-desktop-samples/blob/main/Report Theme JSON Schema/README.md

Use this pattern to reference specific data colors defined in the theme. This is an alternative to redeclaring colors for each visual.

```json
{
  "solid": {
    "color": {
      "expr": {
        "ThemeDataColor": {
          "ColorId": 2,
          "Percent": 0
        }
      }
    }
  }
}
```

--------------------------------

### Reference Local JSON Schema in VS Code

Source: https://github.com/microsoft/powerbi-desktop-samples/blob/main/Report Theme JSON Schema/README.md

Use the "$schema" property in your custom theme JSON file to reference a locally downloaded schema file for inline validation and autocomplete.

```json
{
  "$schema": "./reportThemeSchema-2.121.json",
  "name": "My Custom Theme",
  "dataColors": [
    "#4472C4",
    "#ED7D31",
    "#A5A5A5",
    "#FFC000",
    "#7030A0"
  ]
}
```

--------------------------------

### Visual Styles Schema Enforcement

Source: https://github.com/microsoft/powerbi-desktop-samples/blob/main/Report Theme JSON Schema/README.md

This pattern is enforced under `visualStyles > * > *` to ensure proper structure for visual property definitions. Definitions not matching this type will result in verbose error messages.

```json
[
    {
        [propertyName]: number, boolean, string, or other structural type (color fill, themeColorExpr, etc.)
    }, ...
]
```

--------------------------------

### Structural Color Reference in Theme

Source: https://github.com/microsoft/powerbi-desktop-samples/blob/main/Report Theme JSON Schema/README.md

Reference structural colors defined at the top level of the theme. This avoids repeating color definitions for specific visuals.

```json
{ "solid": { "color": "foreground" } }
```

--------------------------------

### Reference Remote JSON Schema in VS Code

Source: https://github.com/microsoft/powerbi-desktop-samples/blob/main/Report Theme JSON Schema/README.md

Alternatively, reference the raw HTML link of the schema directly from the repository. This requires an active internet connection and allows Visual Studio Code to access the remote resource.

```json
{
  "$schema": "https://raw.githubusercontent.com/microsoft/powerbi-desktop-samples/main/Report Theme JSON Schema/reportThemeSchema-2.121.json",
  "name": "My Custom Theme",
  "dataColors": [
    "#4472C4",
    "#ED7D31",
    "#A5A5A5",
    "#FFC000",
    "#7030A0"
  ]
}
```

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