EECIC_INVOICE_LEVEL1 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 "Fields from Invoicing Table + Fields linking to FI-CA Data" 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_EECIC_INVOICE_LEVEL1 TYPE EECIC_INVOICE_LEVEL1.
The EECIC_INVOICE_LEVEL1 table consists of various fields, each holding specific information or linking keys about Fields from Invoicing Table + Fields linking to FI-CA Data data available in SAP. These include TOTAL_AMNT (Amount in Transaction Currency with +/- Sign), TOTAL_WAER (Transaction Currency), ERDAT (Date on Which Record Was Created), AEDAT (Changed On)... 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. .