Here we would like to draw your attention to T123 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).T123 is a transaction code used for Number Range Maintenance: TT123 in SAP.
It comes under the package SZNT.When we execute this transaction code, SAPMSNUM is the normal standard SAP program that is being executed in background.
Transaction T123 technical data table
|Purpose||Number Range Maintenance: TT123|