The operation-level USS table contains definitions for USS messages that are sent to the VTAM® operator or a program operator. These USS messages and their VTAM message equivalents are:
| USS message number | VTAM operator message |
|---|---|
| 0 | IST457I |
| 1 | IST450I |
| 2 | IST451I |
| 3 | IST452I |
| 4 | IST453I |
| 6 | IST792I |
| 8 | IST454I |
| 11 | IST455I |
| 12 | IST456I |
| 14 | IST458I |
See IST messages for VTAM network operators IST001I – IST399I for a description of the VTAM operator messages listed in the preceding chart.