Request for quotation: supplier portal

Hello Team

I am having some issue with the RFQ submission through supplier portal.

Here’s the use case:

I create an RFQ and send it to supplier and it appears in the supplier portal as:

supplier quotes the rate and submits from its portal:


he does not quote the rate for one of the items maybe because he does not sell that item.

After submission:
The problem is: the rate of the item (for which he did not quote any rate) gets automatically populated as highlighted in the pic below ( i think it is coming from the Item Price)

Is it the standard functionality? or is it a bug? Is it compulsory for the supplier to quote the rates of all the items listed in the RFQ.

Please help.

Thanks and stay safe.