Here we would like to draw your attention to SPH2 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).SPH2 is a transaction code used for Maintain outgoing number change in SAP.
It comes under the package SPHO.
Transaction SPH2 technical data table
|Purpose||Maintain outgoing number change|