Syntax Notes
If any of BPR06 or BPR07 are present, then all are required.
If BPR08 is present, then and BPR09 is required.
If any of BPR12 or BPR13 are present, then all are required.
If BPR14 is present, then and BPR15 is required.
If any of BPR18 or BPR19 are present, then all are required.
If BPR20 is present, then and BPR21 is required.