how to mention source for create details?

how to mention source for create details?

  

I want to know how to mention source in create or update details.

i have already made entities.

i am new to this please explain

Hi Khalid,

This is all explained in the tutorials. Did you take them? If not, please do so, as there is some basic OutSystems knowledge required here. See also this article by Eduardo, explaining how to engage here.