Add LOV attributes against each line in Negotiation

Summary:

We have a business use case in Negotiations wherein certain attributes are required as part of the Supplier response and such attributes are applicable at line level. Unlike requirements, these need to be defined and responded against each and every line of the negotiation.

We cannot use the DFF approach here as any DFF added at negotiation line level will not be available for the supplier to view or respond to from the Supplier Portal. Coming to the usage of Attributes, here also we have a limitation in the sense that these can only be utilized with a Display type as Free Text, Number or Date format. We would like to define a LOV based attribute on which the Supplier can make a selection for the respective negotiation line to limit errors that may occur if the field is made a free text