Is there a way to notify a user if they try to create something that they have already created based on one certain colu

[Ellen Schlechter]

For step 1 what js do I add to the where parameter? I invoke this service with my create button, correct? Do I map anything?

[Evgene Karachevtsev]

Hello Ellen,

First step fully depends on you. We can't imagine what type of searching do you need. It's your own application logic. For example, if you don't need users with same names, you have to add appropriate js code. But unfortunately, we can guess, what logic do you need really, it's just example.