Unable to provide value for Line Level Attributes in Supplier Portal Redwood Response Page

Summary:

We have enabled the Redwood Supplier Portal Experience using the Opt In & following that the Negotiation Response page has also been shifted to Redwood automatically without any configuration. As part of our Negotiation cycle the Business users have requirements specific to each line of the negotiation which the supplier needs to provide a response to at the line level along with the Response Price. In the Classic UI, this was done by leveraging the Required Details Tab wherein the line details would open up and all elements specific to the lines will be entered there including the Line Level