Messages are usually used to tell the user what
is going on. The following types of messages are available in ABAP.
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A
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Termination
|
The message appears in a dialog
box, and the program terminates. When the user has confirmed the message,
control returns to the next-highest area menu.
|
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E
|
Error
|
Depending
on the program context, an
error dialog appears or the program terminates.
|
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I
|
Status
|
The message appears in a dialog
box. Once the user has confirmed the message, the program continues
immediately after the MESSAGE statement.
|
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S
|
Error
|
The program continues normally
after the MESSAGE statement, and the message is displayed in the
status bar of the next screen.
|
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W
|
Warning
|
Depending
on the program context, an
error dialog appears or the program terminates.
|
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X
|
Exit
|
No message is displayed, and the
program terminates with a short dump. Program terminations with a short dump
normally only occur when a runtime error occurs.
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The syntax for issuing a message is as follows.
MESSAGE <message> TYPE <message type>.
We can issue a status message as follows. Status message will be
displayed in the status bar. After the message is displayed the program
continues after the MESSAGE statement.
MESSAGE 'This is a status message' TYPE 'S'.
Information message will be displayed in a dialog box. Once
the user has confirmed the message, the program continues immediately after the
MESSAGE statement.
MESSAGE 'This is an information message' TYPE 'I'.
Error message in report programs will be displayed in
the status bar and when the user press enter, the program terminates.
MESSAGE 'This is an error message' TYPE 'E'.
Warning message behaves similar to error message in report
programs.
Exit Message – No message is displayed, and the program
terminates with a short dump. Short dumps can be viewed in t-code ST22.
MESSAGE 'This produces short dump' TYPE 'X'.
Termination Message appears in a dialog box, and the program
terminates. When the user has confirmed the message, control returns to the
next-highest area menu.
MESSAGE 'This is termination message' TYPE 'A'.
Instead of hardcode the message text in the
program we can maintain the message text in text symbols. In order to maintain
text symbols use the menu path Goto->Text Elements->Text Symbols in ABAP
editor.
In the text symbols screen we can maintain the
messages with a 3 character identifier.
Then use the following message statement.
MESSAGE text-001 TYPE 'I'.
