It can sometimes be useful to issue (create) system messages under program control rather than interactively. For example, you can issue warning messages from a background job before starting a database backup or other action that causes the R/3 System to pause.

To issue a message under program control, you need to create a program that calls the function module shown below. When the program runs (for example, as a job step in a background job), the message that you specify is displayed immediately as a system message. The message expires and is no longer displayed at the time that you specify.

data: emtext like TEMSG-EMTEXT.
data: exp_time like TEMSG-TIMDEL.

* Messages have the same format as the dialog transaction --
* a maximum of 3 lines each with a maximum of 60 characters. Only the first line
* must contain a message.
emtext = "Bitte abmelden. Backup in 2 minutes.

* Enter the expiration time as shown. Use 12- or 24-hour format as * set in the user master record under which the program will run.

* If only time is specified, today’s date is assumed.

* Always specify a time.
exp_time = '230000'.

Each time your program runs, the message you specify is issued to all users.