Message SAP XS007 - Address & invalid

Diagnosis
The address specified is invalid or initial (address value &V1&,address type &V2&).

System Response
The action was canceled.
Additional information (if available):
V4

Procedure
Enter a correct address that is suitable for address type &V2&.
The formats are:
INT (Internet mail addresses): @ or
comment @ or
@ (comment)
FAX (fax addresses):
X40 (X.400 mail) : C=; A= (At least thesefields must be specified; usually P= and S= arealso required.)
RML (SAPoffice mail addresses): ::
PAG (pager(SMS) addresses): :
PRI (printer):