The quantity from the line in the original contract or commitment. If revised units/revised values is being used in a commitment this can also include positive or negative additions to the quantity via Commitment COs. If this field is affected by revised units/revised values it is highlighted in yellow.
Right click the highlighted field to open theCommitment Line Recap Dialog. Note that in many records this field can be shown or hidden by checking or unchecking the Use Units Checkbox.