| Probe name | Module | Description | Dump type |
|---|---|---|---|
| ISTTCC01 | ISTTCCTD | Multiple function keywords were encountered. TCP-DLC supports ACTPATH, DACTPATH, OPENPATH, and CLOSEPATH. | Full |
| ISTTCC02 | ISTTCCRI | Registration Manager or the DLC sent an unrecognizable RUPE. | Mini |
| ISTTCC03 | IUTLLCID | Unrecognized primitive. | Mini |
| ISTTCC04 | ISTTCCRI | An unexpected RUPE was encountered when a RUPE was sent to Registration Manager. | Full |
| ISTTCC05 | IUTLLCID | Input is not a RUPE response. | Mini |