Here we would like to draw your attention to KCSA transaction code in SAP. As we know it is being used in the SAP CA-GTF (General Application Functions in CA) component which is coming under CA module (Cross Application).KCSA is a transaction code used for Send structure output fields default in SAP.
It comes under the package BKD.
Transaction KCSA technical data table
|Purpose||Send structure output fields default|