Diagnosis
You have assigned a user name in Customizing (table SCMGPARAM; parameterPSMAILSD) that should be used as the e-mail address. However, this username &V1& is not known in the system.

System Response
It is not possible to send the e-mail.

Procedure
Either create the user &V1& in the system and define a valid e-mailaddress or create the correct user name in Customizing(table SCMGPARAM; parameter PSMAILSD).