Hi all! We hope you’re enjoying our DQ Rules best practice series and finding useful tips & tricks to implement in your day-to-day work. In this post, we will cover aggregation rules and give an overview of creating and configuring aggregation rules to unlock the grouping capabilities. Aggregation rules in Ataccama's ONE can be used in various types of data quality rules, such as Validity, Uniqueness, Completeness, Timeliness, and Accuracy. Let's dive in! How to create aggregation rules? To create an aggregation rule, follow these steps: Select "Aggregation rule" as the rule type in the ONE web application. The "Group by" section will now be available, allowing you to define the grouping criteria. You can create aggregation rules using either the condition builder or ONE expressions, both of which offer flexibility and ease of use. These methods allow you to select input attributes, apply transformations to create variables, and aggregate data based on the desired grouping. No Code Agg