00764
Segment Unique Key
2000-10-28
Components: <entity identifier (ST)> ^ <namespace ID (IS)> ^ <universal ID (ST)> ^ <universal ID type (ID)>
Definition: This field contains a unique identifier for one of the multiple repetitions of this segment, to be used in conjunction with the preceding field. Each of the repetitions of the segment will be uniquely identified by this unique key field for the purposes of updates.
Length≤80
4 components
| 1 | O | - | entity identifier | |
| 2 | O | namespace ID | ||
| 3 | O | - | universal ID | |
| 4 | O | universal ID type |