The following table contains the LU-LU session services (SSL) software probes. When an SSL software probe is triggered, an error has occurred while processing network session services for an LU-LU connection. The search, session initiation, or request causing the error is rejected. VTAM® will attempt to recover from the error and continue processing subsequent requests. Recovery might not be possible for some types of errors and subsequent requests might fail, terminals might hang, and other types of errors might occur.
A system dump is taken to assist in identifying the source of the problem. A VABEND macroinstruction can also be processed if specified by the probe instruction. The processing element is freed and processing continues.
| Probe name | Module | Description | Dump type |
|---|---|---|---|
| ISTSLC01 | ISTSLCRT | An unknown interprocess signal was dispatched to the SSL component process anchor block (PAB). | Mini |
| ISTSLC02 | ISTSLRDP | Finite state machine information is missing when a SEARCH_RPY signal is processed. | Mini |
| ISTSLC03 | ISTSLRDP | Finite state machine information is missing when a CDINIT SEARCH_RPY signal is processed. | Mini |
| ISTSLC04 | ISTSLRDP | Finite state machine information is missing when an IOCD SEARCH_RPY signal is processed. | Mini |
| ISTSLC05 | ISTSLRDP | Finite state machine information is missing when a NOTIFY SEARCH_RPY signal is processed. | Mini |
| ISTSLC06 | ISTSLRDP | Finite state machine information is missing when a SEARCH_RPY signal is processed and a storage failure occurs. | Mini |
| ISTSLC07 | ISTSLRXS | A failure occurred while performing postprocessor information processing for a signal being sent to session services. | Mini |
| ISTSLC08 | ISTSLTPI | An unexpected combination of conditions was encountered during third-party initiated finite state machine processing. | Mini |
| ISTSLC09 | ISTSLBXN | A failure occurred while performing postprocessor information processing for a signal being sent to session services. | Mini |
| ISTSLC10 | ISTSLURR | Route Selection control vector (RSCV) information is missing from SSL's session initiation control block when performing a build request for a RECOMPUTE_ROUTE signal. | Mini |
| ISTSLC11 | ISTSLBXJ | A failure occurred while performing postprocessor information processing for a signal being sent to session services. | Mini |
| ISTSLC12 | ISTSLRXJ | Finite state machine information is missing when an INIT_OTHER_COMP signal is processed, and a storage failure occurred. | Mini |
| ISTSLC13 | ISTSLRXJ | Finite state machine information is missing when an INIT_OTHER_COMP signal is processed. | Mini |
| ISTSLC14 | ISTSLBXI | A failure occurred while performing postprocessor information processing for a signal being sent to session services. | Mini |
| ISTSLC15 | ISTSLUDS | An error occurred while the SSL component was removing a session initiation control block key from the list. | Full |
| ISTSLC16 | ISTSLUDS | An error occurred while the SSL component was removing a session initiation control block from the list. | Mini |
| ISTSLC17 | ISTSLUGT | The ACMDT's node type information for this node had an unknown value because it did not indicate whether this is a VTAM end node or a VTAM network node. | Mini |
| ISTSLC18 | ISTSLUBX | A build request was received for an unrecognized interprocess signal. | Mini |
| ISTSLC19 | ISTSLUBX | A build request was received for an unrecognized interprocess signal. | Mini |
| ISTSLC20 | ISTSLUBX | The SSL component could not remove a fully qualified procedure correlation identifier (FQPCID) from the list. | Mini |
| ISTSLC21 | ISTSLUBX | The SSL component could not remove a FQPCID_MODIFIER from the list. | Mini |
| ISTSLC22 | ISTSLRXI | A failure occurred while performing postprocessor information processing for a signal being sent to session services. | Mini |
| ISTSLC23 | ISTSLVPE | An unrecognized signal was received from directory services. | Mini |
| ISTSLC24 | ISTSLUSC | The SSL component was unable to determine the type of signal to send to session services. | Mini |
| ISTSLC25 | ISTSLURX | An unrecognized interprocess signal was received from session services. | Mini |
| ISTSLC26 | ISTSLURD | An unrecognized interprocess signal was received from directory services. | Mini |
| ISTSLC27 | ISTSLSNO | The Route Selection control vector (RSCV) information is missing from the control vector list of the session initiation control block. | Mini |
| ISTSLC28 | ISTSLSNO | The Route Selection control vector (RSCV) information is missing from the control vector list of the session initiation control block. | Mini |
| ISTSLC29 | ISTSLSNO | An unrecognized session initiation status was received for the current system state. | Mini |
| ISTSLC30 | ISTSLSNO | An unexpected combination of conditions was encountered during finite state machine processing initiated by the secondary logical unit (SLU) at a network node (NN). | Full |
| ISTSLC31 | ISTSLUBD | A build request was received for an unrecognized interprocess signal. | Mini |
| ISTSLC32 | ISTSLSED | An unexpected combination of conditions was encountered during finite state machine processing initiated by the secondary logical unit (SLU) at an end node (EN) destination logical unit (DLU). | Mini |
| ISTSLC33 | ISTSLRXO | A failure occurred while performing postprocessor information processing for a signal being sent to session services. | Mini |
| ISTSLC34 | ISTSLRXQ | Finite state machine information is missing when a QUEUED signal is processed. | Mini |
| ISTSLC35 | ISTSLRXC | Finite state machine information is missing when a SESS_REQ_COMP signal is processed. | Mini |
| ISTSLC36 | ISTSLRXC | Finite state machine information is missing when a SESS_REQ_COMP signal is processed and storage problems occur. | Mini |
| ISTSLC37 | ISTSLBXV | A failure occurred while performing postprocessor information processing for a signal being sent to session services. | Mini |
| ISTSLC38 | ISTSLBXS | A failure occurred while performing postprocessor information processing for a signal being sent to session services. | Mini |
| ISTSLC39 | ISTSLRXD | Finite state machine information is missing when a DEQUEUE signal is processed. | Mini |
| ISTSLC40 | ISTSLPND | An unexpected combination of conditions was encountered during finite state machine processing initiated by the primary logical unit (PLU) at a network node. | Mini |
| ISTSLC41 | ISTSLRXV | Finite state machine information is missing when a PROV_SC signal is processed. | Mini |
| ISTSLC42 | ISTSLPNO | The Route Selection control vector (RSCV) information is missing from the control vector list of the session initiation control block. | Mini |
| ISTSLC43 | ISTSLPNO | The RSCV information is missing from the control vector list of the session initiation control block. | Mini |
| ISTSLC44 | ISTSLPNO | An unexpected combination of conditions was encountered during finite state machine processing initiated by the primary logical unit (PLU) at a network node. | Full |
| ISTSLC45 | ISTSLPNO | The RSCV information is missing from the control vector list of the session initiation control block. | Mini |
| ISTSLC46 | ISTSLBXQ | A failure occurred while performing postprocessor information processing for a signal being sent to session services. | Mini |
| ISTSLC47 | ISTSLBXC | A failure occurred while performing postprocessor information processing for a signal being sent to session services. | Mini |
| ISTSLC48 | ISTSLRTT | Finite state machine information is missing when a RECOMPUTE_ROUTE_RPY signal is processed. | Mini |
| ISTSLC49 | ISTSLRTR | Finite state machine information is missing when a REQ_ROUTE_RPY signal is processed. | Mini |
| ISTSLC50 | ISTSLRDR | Finite state machine information is missing when a SEARCH_REQ signal is processed. | Mini |
| ISTSLC51 | ISTSLRTC | Class of service (COS) and transmission priority field (TPF) control vector information is missing from the control vector list of the session initiation control block. | Mini |
| ISTSLC52 | ISTSLRTC | Finite state machine information is missing when a REQ_COS_TPF_RPY signal is processed. | Mini |
| ISTSLC53 | ISTSLRTV | Finite state machine information is missing when a REQ_TG_VECTORS_RPY signal is processed. | Mini |
| ISTSLC54 | ISTSLRNT | The NOTIFY generalized data stream (GDS) variable being processed contained a NOTIFY_TYPE that was unknown or not valid. | Mini |
| ISTSLC55 | ISTSLRNT | Notify control vector 80 (CV80) information is missing from the control vector list of the session initiation control block. | Mini |
| ISTSLC56 | ISTSLRNT | Notify CV81 information is missing from the control vector list of the session initiation control block. | Mini |
| ISTSLC57 | ISTSLRDN | The CDINIT GDS variable information is missing from a NON_VERIFY_REQ signal received from directory services. | Mini |
| ISTSLC58 | ISTSLRDC | Finite state machine information is missing when a CHAIN_FLOW signal is processed. | Mini |
| ISTSLC59 | ISTSLPXR | An unexpected combination of conditions was encountered during processing of the PLU-initiate exit border node preprocessor finite state machine (FSM). | Mini |
| ISTSLC60 | ISTSLPXT | An unexpected combination of conditions was encountered during processing of the PLU-initiate exit border node postprocessor finite state machine. | Mini |
| ISTSLC61 | ISTSLPYR | An unexpected combination of conditions was encountered during processing of the PLU-initiate entry border node preprocessor finite state machine. | Mini |
| ISTSLC62 | ISTSLPNS | RSCV information is missing from the control vector list of the session initiation control block. | Mini |
| ISTSLC63 | ISTSLPNS | An unexpected combination of conditions was encountered during finite state machine processing initiated by the primary logical unit (PLU) at a network node. | Mini |
| ISTSLC64 | ISTSLPED | An unexpected combination of conditions was encountered during finite state machine processing initiated by the primary logical unit (PLU) at an end node destination logical unit. | Mini |
| ISTSLC65 | ISTSLPEO | An unexpected combination of conditions was encountered during finite state machine processing initiated by the primary logical unit (PLU) at an end node origination logical unit. | Mini |
| ISTSLC66 | ISTSLBXT | A failure occurred while performing postprocessor information processing for a signal being sent to session services. | Mini |
| ISTSLC67 | ISTSLBXR | A failure occurred while performing postprocessor information processing for a signal being sent to session services. | Mini |
| ISTSLC68 | ISTSLBXP | A failure occurred while performing postprocessor information processing for a signal being sent to session services. | Mini |
| ISTSLC69 | ISTSLBXO | A failure occurred while performing postprocessor information processing for a signal being sent to session services. | Mini |
| ISTSLC70 | ISTSLBXE | A failure occurred while performing postprocessor information processing for a signal being sent to session services. | Mini |
| ISTSLC71 | ISTSLBXD | A failure occurred while performing postprocessor information processing for a signal being sent to session services. | Mini |
| ISTSLC72 | ISTSLBDL | A failure occurred while performing postprocessor information processing for a signal being sent to session services. | Mini |
| ISTSLC73 | ISTSLSND | An unrecognized session initiation status was received for the current system state in SLU-initiate finite state machine processing. | Mini |
| ISTSLC74 | ISTSLSND | An unexpected combination of conditions occurred during SLU-initiate finite state machine processing at a network node. | Mini |
| ISTSLC75 | ISTSLSEO | An unexpected combination of conditions occurred during SLU-initiate finite state machine processing at an end node origination logical unit. | Mini |
| ISTSLC76 | ISTSLUCS | The SSL component was unable to remove the key entry for the session initiation control block from the list. | Full |
| ISTSLC77 | ISTSLRXN | Finite state machine information is missing when a PEND_SC signal is processed. | Mini |
| ISTSLC78 | ISTSLUSL | An unrecognized LU role was provided for a session initiation control block find request. | Mini |
| ISTSLC79 | ISTSLCRT | An unrecognized work element was dispatched to the SSL process anchor block (PAB). | Mini |
| ISTSLC80 | ISTSLR63 | The SSL component was unable to remove a CV63 from the control vector list of the session initiation control block. | Mini |
| ISTSLC81 | ISTSLBLC | A CV82 control vector contains a network-qualified sender name that is not valid. | Mini |
| ISTSLC82 | ISTSLBLC | A CV82 control vector contains a network-qualified host receiver name that is not valid. | Mini |
| ISTSLC84 | ISTSLUNV | The original class of service (COS) associated with the SLU-initiate request was not found in the parent session initiation control block during a nonverify search sent in response to a SLU-initiate request. | Mini |
| ISTSLC85 | ISTSLRDI | The SSL component received a SESS_INIT_INFO_REQ signal which contained inconsistent data. | Full |
| ISTSLC86 | ISTSLBXB | Failure occurred when performing front-end processing for a BN_SESS_RPY signal being sent to session services. | Mini |
| ISTSLC87 | ISTSLBXH | Failure occurred when performing front-end processing for a CACHE_BN_INFO signal being sent to session services. | Mini |
| ISTSLC88 | ISTSLBTM | The network-qualified adjacent nonnative CP name is not valid. | Mini |
| ISTSLC89 | ISTSLRXB | The network-qualified adjacent LU name is not valid. | Mini |
| ISTSLC90 | ISTSLRXB | Failure occurred when performing front-end processing for a BN_SESS_RPY signal being sent to session services. | Mini |
| ISTSLC91 | ISTSLRTM | Finite state machine information was missing when a PROCESS_MAP_COS signal from topology routing services (TRS) was being processed. | Mini |
| ISTSLC92 | ISTSLUBX | The RSCV that should have been in the session initiation control block when building a CACHE_BN_INFO to session services was missing. | Mini |
| ISTSLC93 | ISTSLRXB | The class of service (COS) was received on a BN_SESS_REQ, but the primary logical unit (PLU) COS from LOCATE time processing could not be found. | Mini |
| ISTSLC94 | ISTSLPYT | An unexpected combination of conditions was encountered during processing of the PLU-initiate entry border node postprocessor finite state machine. | Mini |
| ISTSLC95 | ISTSLSXR | An unexpected combination of conditions was encountered during processing of the SLU-initiate exit border node preprocessor finite state machine. | Mini |
| ISTSLC96 | ISTSLSXT | An unexpected combination of conditions was encountered during processing of the SLU-initiate exit border node postprocessor finite state machine. | Mini |
| ISTSLC97 | ISTSLSYR | An unexpected combination of conditions was encountered during processing of the SLU-initiate entry border node preprocessor finite state machine. | Mini |
| ISTSLC98 | ISTSLSYT | An unexpected combination of conditions was encountered during processing of the SLU-initiate entry border node postprocessor finite state machine. | Mini |
| ISTSLC99 | ISTSLUBR | An unexpected combination of conditions was encountered during border node request finite state machine processing. | Mini |
| ISTSLCA0 | ISTSLUFR | The finite state machine router was called for a situation where a finite state machine (FSM) is not used. | Mini |
| ISTSLCA1 | ISTSLSNO | Route Selection Control Vector (RSCV) missing from the session initiation control block's control vector list. | Mini |
| ISTSLCA2 | ISTSLUAS | An unexpected combination of conditions was encountered during dependent LU requester search finite state machine processing. | Full |
| ISTSLCA3 | ISTSLR2B | Missing subvector on CV2B (RSCV). | Full |
| ISTSLCA4 | ISTSLRDI | The DLU is nonnative, but the previously stored DLU information and the DLU information about the SESS_INIT_INFO_REQ IPS just received do not match. | Mini |
| ISTSLCA5 | ISTSLRDP | The DLU is nonnative, but the previously stored DLU information and the DLU information about the SEARCH_RPY IPS just received do not match. | Mini |
| ISTSLCA7 | ISTSLRDSD | A call to ISTSXCXS failed, either unknown RU or insufficient storage. | Mini |
| ISTSLCA8 | ISTSLU85 | SSLCNO action invoked in FSMe. | Mini |