Configuring SAP System Messages

Whenever you encounter an Error or Warning in SAP, this is when you will see a SAP system message. It is controlled via a message class along with its number. You can see as an example from the picture below.

From the screenshot above, you can see that the Message class is M3(The first 2 characters), followed by the Message number (351).

You can have an Overview of the SAP system messages via T-code SE91. It contains all the system messages there.

There are 2 things that you can do to a system message.
1) Configuring any system message of your choice to Warning, or Error. This can be done via SM30/SM31 for the following tables.

Table		Description
	T100S		List of all the system messages that the user can configure
	T100C		List of all the messages that the user has customized
	T100SA		List of all configurable application areas (or message classes)

2) Another thing that you could do is assign a separate version (Instead of 000) to your own and assign this version to a user. This gives us the functionality to have Warning for certain users, and Error for another set of users for the same system message. Whenever SAP encounters an issue, it will check whether there is a different version other than 000, and then check if the user has a parameter MSV assigned to that particular version. If not, the value under standard version 000 will be used.