Here we would like to draw your attention to USMD_RULE transaction code in SAP. As we know it is being used in the SAP CA-MDG (Master Data Governance in CA) component which is coming under CA module (Cross Application).USMD_RULE is a transaction code used for Validations and Derivations in SAP.
It comes under the package USMD7.
Transaction USMD_RULE technical data table
|Purpose||Validations and Derivations|