| Field identifier | FIELD1 |
| Field description | HLA value of allele 1 |
| Element type | HLAType |
| Field type | DUMMY |
| Required | Dependent |
| Length | 5 or 20 |
| Comment | Element within the element SER and DNA |
| Dictionary field | DUMMY (Dummy dictionary field) |
| EMDIS fields related to dictionary field |