Create the BAdI implementation

In transaction SE18, create an enhancement implementation under BAdI /TCTM/EX_EWM_SRV_OMSG_NOTIF with the name ZTCTM_EWM_SRV_OM_NOTIF_MSTEAMS.

Under BAdI /TCTM/EX_EWM_SRV_OMSG_HANDLERS, create a second enhancement implementation called ZTCTM/EX_EWM_SRV_OMSG_HANDLERS with description "TCT Mobility: EWM Operator Messaging Handlers" and create an implementing class that uses interface /TCTM/IF_EX_EWM_SRV_OMSG_HNDLS.