ESH_PM_S_NTF_ITM 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 "Notification Item Longtext" 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_ESH_PM_S_NTF_ITM TYPE ESH_PM_S_NTF_ITM.
The ESH_PM_S_NTF_ITM table consists of various fields, each holding specific information or linking keys about Notification Item Longtext data available in SAP. These include FENUM (Item Number in Item Record), KZMLA (Primary language indicator for text segment), INDTX (Object Long Text Available), TDNAME (Name)... 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. .