This field displays a change request ID if this component, or the specific version or revision of this component is associated with an 'active' change request. An active change request is a change request at the planning or implementation stage of the processing cycle. A warning icon is displayed adjacent this field.
If a warning icon is displayed you should consider delaying the creation or amendment of this assembly (BOM) until the change request identified is closed. At that point a change to this component will have either been seen through to its conclusion and the change delivered, or the change request rejected. You will not, however, be prevented from creating or amending this BOM should you decide to do so.