Validation within custom method

[Roehlen, Peter]

Brad,
 
If it is a dialog method (ie SAP transaction call), then I'd suggest you
create a field exit (a couple of minutes work) to validate inside the
screen.  It's always better to catch the problem at the source.
 
Regards
 
Peter.
 
-----Original Message-----
From: Schroeter, Brad [mailto:BSchroeter at ti.com]
Sent: Friday, 29 September 2000 9:15 AM
To: SAP-WUG at MITVMA.MIT.EDU
Subject: Validation within custom method
 
 
 
Within a custom method I'm trying to validate that a user has made an entry
in a date field (it's not required by the transaction but we need for our
process).  I copied a SAP method and added some validation to have Workflow
keep calling the transaction until the user enters a date.
 
1) Is there a better way to do this without doing "wait up to x seconds" and
selecting from a database within the method?
 
2) If not, what's the best way to figure out the number of seconds in the
"wait" statement?  I just picked 5 and it works fine in our development
system, but I'm not sure if that will always be long enough to recognize a
database update in a production system.
 
-Brad
 
-----------------------------------------------------------------
 
while val_flag <> 'X'.
 
  call transaction 'CC32' and skip first screen.
 
* Wait for ECR table (AENR) to be updated.
  wait up to 5 seconds.
 
* Get ECR effectivity (valid from) date.
  select single datuv
      into valid_from_date
      from aenr
    where aennr = object-key-changenumber.
 
* If effectivity (valid from) date is blank, display error; otherwise
* set validation flag.
  if valid_from_date is initial.
    call function 'POPUP_TO_DISPLAY_TEXT'
       exporting
          titel              = 'Error'
          textline1       = 'Please enter effectivity (valid from) date'
          start_column = 13
          start_row       = 13
  else.
     val_flag = 'X'.
  endif.
 
endwhile.
 
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