We can set an error in the backend on a particular field in the backend ... or better said, the error can have a reference to a field name.This field name reference seems not to be used but could be used to indicate to the user that a certain field has an error and the first field with an error could get focus.
Is such functionality already available? (how) are there plans to add this to the swat framework?
Error messages returned from the backend with reference to a particular field can't be bound to a specific field in form, currently that is not implemented. Also the focusing on the first field with error is not supported. I'm not aware of any plans to support this as of yet.