GA4 mapping can't see my custom property

[FabioMann]

Hello, I have the following issue:

In my data-layer I have a variable named: device_infos which should be mapped in GA4.

But when I go in my GA4 property in order to create this custom dimension, it won't appear in the User properties dropdown.

Can anyone tell me if I did anything wrong?

Thank you very much

[jenniferkaye]

You'll need to add the property through Google's interface, which is referenced in this Google Article, otherwise, the platform won't know what to do with the information.

[FabioMann]

Hello, thanks for the reply.

I actually did it but it took longer than what I thought (it was visible on GA4 after two days) so I thought it wasn't working.

Thank you anyways