CIF_CUXT_INSTANCE_MATCHING 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 "Assignment of Extern. Item Number to Intern. Instance Number" 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_CIF_CUXT_INSTANCE_MATCHING TYPE CIF_CUXT_INSTANCE_MATCHING.
The CIF_CUXT_INSTANCE_MATCHING table consists of various fields, each holding specific information or linking keys about Assignment of Extern. Item Number to Intern. Instance Number data available in SAP. These include INSTANCE_NO (Instance Reference), PERSIST_ID (Global Unique ID for table)... 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. .