| Field code | PARAM |
| Field description | Parameter for ACTION |
| Field type | Alphanumeric Length: 50 |
| Field rule | There are currently no valid values defined; if this (optional) field is included in the ADMIN message, its value should be left blank (�� or �?�) |
| Dictionary field | PARAM (EMDIS message only, not in WMDA data dictionary.) |
| EMDIS messages |
ADMIN |
| WMDA XML fields related to dictionary field |