BUP_S_RELS_DATA_API 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 "BP-API: Data of MD Segment Shareholder Relation" 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_BUP_S_RELS_DATA_API TYPE BUP_S_RELS_DATA_API.
The BUP_S_RELS_DATA_API table consists of various fields, each holding specific information or linking keys about BP-API: Data of MD Segment Shareholder Relation data available in SAP. These include PARTNER2_UUID (GUID of a Business Partner in CHAR 32 Format for BAPIs), CLIENT (Client), RELNR (BP Relationship Number), PARTNER1 (Business Partner Number)... 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. .