Using Message Class in SAP ABAP

• Step1 : What is message class in SAP ABAP ?
• Step2 : Creating message class in SAP
• Step3 : Using message class in ABAP programs

Step1:What is message class in SAP ABAP ? medium Top^

Message Class is nothing but a container of messages, the main purpose of this message class is re-usability and readability. A message class can be reused in multiple programs and Function modules.The Message Class can be created in two ways.

1. Direct way using T-code SE91.
2. Through Program.

You know all the message texts under message classes are stored in T100 table, each message in message class has a number and value.

We can able to pass parameters to message class to raise parameters along with messages.

Syntax1 : Syntax1: MESSAGE <MESSAGE TYPE><MESSAGE NUMBER> (<MESSAGE CLASS NAME>). 
Syntax2 : Step1 : REPORT <REPORT NAME> MESSAGE-ID <MESSAGE CLASS NAME> ."add message is at the report header (1st line)
          Step2 : MESSAGE <MESSAGE TYPE><MESSAGE NUMBER> . "directly specify messages

The below is the syntax for raising messages with parameters.

MESSAGE <MESSAGE TYPE><MESSAGE NUMBER> WITH <PARAMETER> "Parameter must be defined in message class

By using message class we can raise following messages.

Step2:Creating message class in SAP Medium Top^

The message class can be created in two ways,

1. Using SE91 (message maintenance ) t-code.
2. Using SE38 program.

Creating message class using SE38 program.

REPORT <REPORT NAME> message-id <MESSAGE CLASS> . "Double click on message class click create

REPORT  ZSAPN_MESSAGE_CLASS message-id ZSAPN_MESSAGE . "double click on ZSAPN_MESSAGE and click create

Creating message class using SE91.

Go to SE91 and give message class as ZSAPN_MESSAGE and click create.

Select messages tab, save it in a package (local object for test) and start adding messages.

Step3:Using message class in ABAP programs Medium Top^

There are two ways of using message classes in ABAP programs.

• Defining message class for a report.
• Using messages of a message class directly from message class.

For using message class by defining at report level, we have to define a message class by using below code (example).

REPORT ZSAPN_MESSAGE_CLASS message-id ZSAPN_MESSAGE . "report message-id message class 
       MESSAGE S001. "Raise message here S = Success message type and 001 = message no in ZSAPN_MESSAGE message class

The below is the code for using message class directly by using message number and message class name at message level.

MESSAGE s000(ZSAPN_MESSAGE). " here ZSAPN_MESSAGE is the message class name

Example(SE38 program)

REPORT  ZSAPN_MESSAGE_CLASS .

MESSAGE s000(ZSAPN_MESSAGE).
        OR
REPORT  ZSAPN_MESSAGE_CLASS MESSAGE-ID ZSAPN_MESSAGE.

MESSAGE S000.

By using the above code we can raise success message like below.

Example with parameters

we use &to specify parameters in message of a message class.

REPORT  ZSAPN_MESSAGE_CLASS.

MESSAGE S001(ZSAPN_MESSAGE) WITH '002' '003' .
        OR
REPORT  ZSAPN_MESSAGE_CLASS MESSAGE-ID ZSAPN_MESSAGE.

MESSAGE S001 with '002' '003'.

By using the above code we can raise success message with parameters like below.