A Typical Scenario - Changing an Expired Password

Figure 1 shows a typical scenario in which an expired APPC/MVS password is updated. In the figure, the ATBMINO sample program is an implementation of the expired password notification SNA service TP X'30F0F5F2'.
Figure 1. Changing an Expired Password
   Workstation                                                          APPC/MVS
┌────────────────┐                                                  ┌────────────────┐
│                │                                                  │                │
│                │──────────────────── FMH-5 ──────────────────────→│                │
│                │  1  TP A tries to allocate a conversation        │                │
│                │      with TP B, specifying a conversation        │      2         │
│                │      security level of SAME or PGM.              │ APPC/MVS calls │
│                │                                                  │the MVS security│
│                │                                                  │product to veri-│
│                │                                                  │fy password; it │
│                │←─────────────────── FMH-7 ───────────────────────│  has expired.  │
│                │  3  APPC/MVS does not attach the TP. APPC/MVS    │                │
│                │ notifies the requestor LU of the attach failure. │                │
│                │                                                  │                │
│                │←─────────────────── FMH-5 ───────────────────────│                │
│                │  4  APPC/MVS sends a request to the requestor    │                │
│                │      LU to attach the X'30F0F5F2' program.       │                │
│      5         │                                                  │                │
│Communications  │                                                  │                │
│product on      │                                                  │                │
│workstation     │                                                  │                │
│invokes ATBMINO.│                                                  │                │
│                │                                                  │                │
│      6         │                                                  │                │
│ATBMINO displays│                                                  │                │
│expired password│                                                  │                │
│ panel on       │                                                  │                │
│  workstation.  │                                                  │                │
│                │                                                  │                │
│      7         │                                                  │                │
│ATBMINO invokes │                                                  │                │
│    COMUPASS.   │                                                  │                │
│                │                                                  │                │
│      8         │                                                  │                │
│  User enters a │                                                  │                │
│password change │                                                  │                │
│ request using  │──────────────────── FMH-5 ──────────────────────→│                │
│   COMUPASS.    │  9  COMUPASS sends a request to attach           │                │
│                │ X'06F3F0F1' (SIGNON/Change password TP).         │                │
│                │─────────────────────────────────────────────────→│                │
│                │  10  COMUPASS sends a GDS variable containing    │                │
│                │ password update information to                   │                │
│                │ X'06F3F0F1' (SIGNON/Change password TP).         │                │
│                │                                                  │      11        │
│                │                                                  │  X'06F3F0F1'   │
│                │                                                  │ (SIGNON/Change │
│                │                                                  │password TP) up-│
│                │                                                  │ dates password │
│                │←─────────────────────────────────────────────────│in the security │
│                │  12  X'06F3F0F1' returns a GDS variable          │    database.   │
│                │    to COMUPASS. The GDS variable indicates the   │                │
│      13        │    result of the password change request.        │                │
│ COMUPASS dis-  │                                                  │                │
│plays the result│                                                  │                │
│of the password │                                                  │                │
│change request. │                                                  │                │
│                │                                                  │                │
│      14        │                                                  │                │
│The user updates│                                                  │                │
│local password  │                                                  │                │
│workstation sec-│                                                  │                │
│urity database. │──────────────────── FMH-5 ──────────────────────→│                │
│                │  15  The user requests TP A to retry the         │                │
│                │      original allocate of TP B.                  │                │
└────────────────┘                                                  └────────────────┘