Here we would like to draw your attention to CAC3 transaction code in SAP. As we know it is being used in the SAP CA-TS (Time Sheet in CA) component which is coming under CA module (Cross Application).CAC3 is a transaction code used for Time Sheet: Rejection Reasons in SAP.
It comes under the package CATS.
Transaction CAC3 technical data table
|Purpose||Time Sheet: Rejection Reasons|