Hello ! I want to decode an error, but the response from an external API is .. changeable.. Once, I receive the errors like :

{
"errors":[..]
}

And another time

{
  "data": {
    "error": ".."
  }
}

For the moment, I'm decoding to JsonElement and read each cases. But is there a way to do that automatically with the annotations ?

yes, see https://kotlinlang.org/api/kotlinx.serialization/kotlinx-serialization-json/kotlinx.serialization.json/-json-transforming-serializer/ or https://kotlinlang.org/api/kotlinx.serialization/kotlinx-serialization-json/kotlinx.serialization.json/-json-content-polymorphic-serializer/

I think first is more adapted, thanks a lot !