Here we would like to draw your attention to SO00 transaction code in SAP. As we know it is being used in the SAP BC-SRV (Basis Services / Communication Interfaces in Basis) component which is coming under BC module (BASIS).SO00 is a transaction code used for SAPoffice: Short Message in SAP.
It comes under the package SO.When we execute this transaction code, SAPMSSO0 is the normal standard SAP program that is being executed in background.
Transaction SO00 technical data table
|Purpose||SAPoffice: Short Message|