rule

An Expression object used to categorize costs. This supports dimensions, tags, and nested expressions. Currently the only dimensions supported are LINKED_ACCOUNT, SERVICE_CODE, RECORD_TYPE, LINKED_ACCOUNT_NAME, REGION, and USAGE_TYPE.

RECORD_TYPE is a dimension used for Cost Explorer APIs, and is also supported for Cost Category expressions. This dimension uses different terms, depending on whether you're using the console or API/JSON editor. For a detailed comparison, see Term Comparisons in the Billing and Cost Management User Guide.