# CTI_NextUniqueId()

This subprocedure is used to generate a unique identifier for your request to CyberSource web services. The generated unique ID is also used as a primary key in several DB2 physical files.

## Subprocedure Prototype

| Field | Description |
|---|---|
| `     D CTI_NextUniqueId...      D                 PR                  Extproc('CTI_NextUniqueId')      D                                     Like(CTI_UniqueId_t)` | Returns a unique numeric value. |