MESSAGE_LIST_ASYNCHRON is a standard SAP Structure so does not store data like a database table does. It can be used to define the fields of other actual tables or to process "Message List for Asynchronous Network Costing" Information within sap ABAP programs. This is done by declaring abap internal tables, work areas or database tables based on this Structure. These can then be used to store and process the required data appropriately. i.e. DATA: wa_MESSAGE_LIST_ASYNCHRON TYPE MESSAGE_LIST_ASYNCHRON.
The MESSAGE_LIST_ASYNCHRON table consists of various fields, each holding specific information or linking keys about Message List for Asynchronous Network Costing data available in SAP. These include MESGNR (Message), TEXT (Message Text)... See below for full list along with technical details, documentation, text table, check tables, foreign key relationships, conversion routines, relevant tcodes and example ABAP select code etc. .