In Live mode, Zorro will request this information from your respective broker plugin, and if the info is available, the plugin will supply it.

Now, whether or not the info is wrong? You must evaluate how well your particular broker plugin does this. If it is wrong, I would suggest using the SET_PATCH brokercommand to disable the flow of misinformation, so that you can supply your own overrides.

SET_PATCH is described here:
https://zorro-project.com/manual/en/brokercommand.htm