Version i am using is Oracle 11g.
Team,
I was trying to schedule a job i have ever worked with scheduling jobs this is first time.
I was trying to execute a simple PLSQL block only for once at a a certain time.
When i was creating a Job ..i followed the steps .through below given link. and set only recipient email address not sent email address and gave date and time...while creating job i am facing below error ...
Error

I followed the link and set the below steps in each tab...https://docs.oracle.com/cd/E55747_01/doc.41/e58244/GUID-E6812A89-197A-4515-82EF-4B26C05741EA.htm

and in Notifications tab is like below

and properies tab like below(i did added nor changed anything here)

Please advise