List 229: Gender – based on ISO 5218
| Value | Description | Notes |
|---|---|---|
| u | Unknown or unspecified | Provides positive indication that the gender is not known or is not specified by the sender for any reason |
| f | Female | |
| m | Male |
| Value | Description | Notes |
|---|---|---|
| u | Unknown or unspecified | Provides positive indication that the gender is not known or is not specified by the sender for any reason |
| f | Female | |
| m | Male |