IMS editing for Intersystem Communication (ISC)

IMS recognizes several options on a message-by-message basis when communicating with ISC (LU 6.1).

IMS recognizes the following options:
  • Use basic edit.

    The destination process name (DPN) is BASICEDT, which is a reserved IMS name.

  • Treat the data as transparent data.

    The IMS preset destination mode, which is established by the /SET command, is used. This option is used if a /SET command is in effect for a given session and a primary resource name (PRN) is not specified on the ATTACH or SCHEDULER FMH. While this option is in effect, IMS cannot recognize input commands within this input data stream.

  • Do not edit data that follows the transaction code and input password fields.
    The input destination and security checking is the same as in basic edit. A / as the first character indicates an IMS command and causes the IMS preset destination mode to be bypassed or terminated. No additional editing is done on the input message following the input transaction code or LTERM name and optional password field. This is the default input edit for ISC under each of the following conditions:
    • ATTACH or SCHEDULER FMH is not included in input
    • ATTACH or SCHEDULER FMH does not specify a DPN
    • ATTACH or SCHEDULER FMH specifies a DPN but not a PRN
  • Do nothing.

    IMS uses the input PRN ATTACH parameter as the transaction code or LTERM name for the duration of the single input message. Subsequently, the original IMS preset value can be used again. Basic edit treats the input as transparent with password security already checked.

The chosen option depends on the destination process name (DPN) and the data received by IMS. The DPN is specified on the ATTACH or SCHEDULER FMH.

If a DPN of ISCEDT or its alias is specified the second through fourth options are chosen. The alias for ISCEDT is defined using the EDTNAME keyword on the COMM macro. ISCEDT is also a reserved IMS name.