| Field identifier | POOL |
| Field description | Physical location of the donors/CBUs of the inventory provided as ION |
| Element type | InventoryType |
| Field type | ionType |
| Required | Yes |
| Length | 4 |
| Comment | Physical location of the donors/CBUs of the inventory provided as ION. |
| Dictionary field | Donor location identifier (Physical location of the donor. Used to denote which registry a donor belongs to. Use four digit ION code, will be embedded in GRID) |
| EMDIS fields related to dictionary field |
DON_POOL |