Inter-Module traces

Entering Y for the second option, LOG INTER-MODULE TRACE, gives you a log record for every module that executes during an ISMF session. This information can help you to diagnose loops, or determine module flow when there is more than one possible path to an error. The log record for an inter-module trace consists of:

The name of the module
The contents of register 1 and register 11 when the trace entry was made
Any additional trace data that was recorded.

Figure 1 is an example of the ISPF log with ISMF inter-module trace entries.

Figure 1. ISMF—ISPF Log with ISMF Inter-Module Trace Entries

14:58   *****  ISMF ERROR  ***** - APPLICATION(DGT1 - DATA SET); FUNCTION(DISPLIST)
14:58                            - RETURN CODE(0008); REASON CODE(0102)
14:58                            - MODULE(DGTFCTCK); PROCEDURE(DGTFCTCK)
14:58                            - MESSAGE ID(DGTCT001 - DGTCT001); LAST PANEL(DGTLDDS1)
14:58                            - SERVICE(NONE); FEEDBACK(PROFIEL)
14:58      ISMF    - TRACE       - MODULE ID(DGTFDS21); REG 1(01C9D02E);  REG 11(01CE1374)
14:58                            - TRACE DATA()
14:58      ISMF    - TRACE       - MODULE ID(DGTFDS18); REG 1(01C9C317);  REG 11(01CE1334)
14:58                            - TRACE DATA()
14:58      ISMF    - TRACE       - MODULE ID(DGTFFOP1); REG 1(01CD01F6);  REG 11(01CE1324)
14:58                            - TRACE DATA()
14:58      ISMF    - TRACE       - MODULE ID(DGTFCTSE); REG 1(01CC1216);  REG 11(01CE137C)
14:58                            - TRACE DATA()
14:58      ISMF    - TRACE       - MODULE ID(DGTFFOX1); REG 1(01CDB64E);  REG 11(01CE1254)
14:58                            - TRACE DATA()
14:58      ISMF    - TRACE       - MODULE ID(DGTFDS16); REG 1(01C9A8AB);  REG 11(01CE2264)
14:58                            - TRACE DATA()
14:58      ISMF    - TRACE       - MODULE ID(DGTFFOQ1); REG 1(01CD6626);  REG 11(01CE1354)
14:58                            - TRACE DATA()
14:58      ISMF    - TRACE       - MODULE ID(DGTFLPCK); REG 1(01CA27E6);  REG 11(01CE1354)
14:58                            - TRACE DATA()
14:58      ISMF    - TRACE       - MODULE ID(DGTFFOG1); REG 1(01CC2136);  REG 11(01CE1234)
14:58                            - TRACE DATA()
14:58      ISMF    - TRACE       - MODULE ID(DGTFCTCK); REG 1(01CC2606);  REG 11(01CE12B4)
14:58                            - TRACE DATA()
14:58      ISMF    - TRACE       - MODULE ID(DGTFLPPR); REG 1(01CA395F);  REG 11(01CE121C)
14:58                            - TRACE DATA()