If source org includes a new custom field with field history tracking enabled TRUE, the deployment analyzer reports the following when deploying to target org:

'Fields with history tracking enabled cannot be deployed before it is enabled on the object. You should remove these history tracking changes from the deployment'

Specific use case was object OrderItem

1. Analyzer can clearly detect if field history is enabled on target org object (which it was) - message is spurious.

2. Analyzer can arguably detect that target org's limit (20) will be exceeded by the deployment of the selected custom fields (which could add/remove field tracking from 1+ fields). In my use case, this was in fact the case so if analyzer is detecting this, the message should be reworded

As an aside, what happens if org has purchased Field Audit Trail (where the 20 limit is not applicable).