What version of the FDA's SEND Validation Rules are being used by the Validator?

Is there anyway to tell what version of the FDA’s SEND Validation Rules are being used by Pinnacle 21 Validator to test against the datasets? As far as I know, the most recent version is of SEND Validation Rules is v2.1, and I see the Rule ID (E.g. FDAN001) referenced under Publisher ID in the Validation Report Rule, but is there a way to check which version of the SEND Validation Rules is being used in Pinnacle 21?