DSNE351A EDIT PROCESSING OPTION MUST BE Y (YES) OR N (NO)

Explanation
The user specified an edit option other than 'YES', 'NO',
or the abbreviation 'Y' or 'N'. A valid user response determines
whether SPUFI invokes the ISPF editor to allow the user to edit the input
data set.

System action
SPUFI will wait until the user enters a valid response.

User response
Type in a 'Y' or an 'N', and press 'ENTER'.