COMT_IL_PRDCPN_H_EXT 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 "Historical Data of Relationship Type Customers" 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_COMT_IL_PRDCPN_H_EXT TYPE COMT_IL_PRDCPN_H_EXT.
The COMT_IL_PRDCPN_H_EXT table consists of various fields, each holding specific information or linking keys about Historical Data of Relationship Type Customers data available in SAP. These include CLIENT (Client), ILGUID (Internal, Unique ID of a Relationship), VALID_TO (Valid To (Time Stamp)), SOURCEGUID (Internal ID for Source in a Relationship)... 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. .