---
title: "WhiteList & BlackList"
slug: "whitelist-blacklist"
updated: 2024-11-26T17:19:08Z
published: 2024-11-26T17:19:08Z
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.tritondigital.com/llms.txt
> Use this file to discover all available pages before exploring further.

# WhiteList & BlackList

Each processor has an optional **WhiteList** and **BlackList**. This is defined as a series of field names, each having an associated value. These field/values are checked against the RAS message, and they use the VB “Like” operator ([https://learn.microsoft.com/en-us/dotnet/visual-basic/language-reference/operators/like-operator](https://learn.microsoft.com/en-us/dotnet/visual-basic/language-reference/operators/like-operator)). A RAS message will trigger a processor when at least one item matches in the whitelist (or there is no whitelist) and no items match the blacklist (or there is no blacklist).

**Example XML:**

```xml
<WhiteList>
   <Item key="category" value="COM*" />
   <Item key="category" value="SPOT" />
</WhiteList>
<BlackList>
   <Item key="category" value="COM99" />
   <Item key="cartNumber" value="cart-99" />
</BlackList>
```