Sales Order Approvals - mandate comments in rejection

Summary:

Hi,

as per our current SalesOrder (ApprovalHumantask) BPM Setup, it is not marked to 'Mandate Comments' on Rejection / Accept.

while trying to reject a sales order approval through the BPM Screen (not through the bell notification), system errors out with

"The request to reject the order was not processed because you did not provide a reason. Provide a reason in the Comments field, and reject the order again. (FOM-4515164)"

as you can see below, we have not mandate the comments on reject

Does there is any other place which can affect the mandate comments which is not under 'ApprovalHumantask' → 'Configuration' ?