CMS_STR_MIG_ASTID 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 "Asset key and Re key for a specific old ref id" 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_CMS_STR_MIG_ASTID TYPE CMS_STR_MIG_ASTID.
The CMS_STR_MIG_ASTID table consists of various fields, each holding specific information or linking keys about Asset key and Re key for a specific old ref id data available in SAP. These include OBJ_OLD_REF_NO (External reference Number of an External System), OBJ_GUID (GUID for Real Estate Object), OBJECT_ID (Object ID), AST_GUID (GUID for Table CMS_AST)... 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. .