At button level , what validations you want to put ?
I want to put Validate Record.
When Buyer clicks on approve then 3 conditions has to be checked.I would like to call a procedure for that.
But main thing is After clicking Approve Button" which event is being called and my proposed solution has to execute at that point of time before the PO gets submitted for approval.
I think validation on button thru personalization will not work. you have to go some other way.
Let me know the very first field (on next screen) after the APPROVE button on PO entry form.
In your case, may be RESERVE or SUBMIT FOR APPROVAL.