Hi Rudo,

You can do this in two ways:

• You can create a timer for that, and set the schedule to run at once at night every day. See for more information how to create and schedule a timer: https://success.outsystems.com/Documentation/11/Developing_an_Application/Use_Timers/Create_and_Run_Timers
  
  You will need to code the timer in your End User module, in order to be able to email the clients that fit your condition. For more information to send emails see:
  https://success.outsystems.com/Documentation/11/Developing_an_Application/Implement_Application_Logic/Send_an_Email_From_a_Web_Application
  and
  https://success.outsystems.com/Documentation/11/Extensibility_and_Integration/Configure_OutSystems_to_Send_Emails
  
  
• Build a BPT process, that has a Wait activity, with the correct condition to send and email. For more information see:
  https://success.outsystems.com/Documentation/11/Developing_an_Application/Use_Processes_(BPT)/Patterns_for_Designing_Processes/Designing_Waiting_Activities

Regards,

Daniel

Hi RUDO MURIEL MUNYAVI,

I can see two ways of doing what you want:

1. You create a Server Action that performs those checks, and then define a new Timer (in the Processes tab of Service Studio) to call that Server Action at midnight every day (you can schedule a timer to your liking)
2. You define the entire sequence of steps in a Business Process, such that at some point you Wait until either (booking date - 2 days) or (proof of payment received) and then check what happened in order to decide what to do next.

The first option is more ad-hoc and quicker to implement. The second is probably more complete, and better in the long term, in that you model the entire process, but will require you to learn BPT (Business Process Technology, OutSystems approach to Business Process Modeling), and have a well defined process in your organization.

Hope this helps!