You can only update IDs which you see when you click on "Get Codes".
You have added a number which is not a valid Expedia rate id into the field in the "Channels" tab of a rate/daily price.
*Go to Prices > Channel Mapping enter the Rate id in the Search box and click on the Rate and make sure the correct booking.com Expedia rate id is selected from the 'get codes' list.
*Scroll to Rate id and click 'get codes' ensure you select a valid code from the list.
*Open your fixed prices (Channel Tab) and make sure the correct Expedia rate id is selected from the 'get codes' list.