Need Help: How to add (if not exists) related records in POST Method

azebutuae · January 14, 2023, 2:48am

I’m having a similar problem…
so, the structure of my API is different.
I just want to check if what is in the “tel” field already exists.
If it exists, return an error message on the screen.

Would it be possible to do this? And how would it be?

Thanks!