BAPI_PPLAN_POSITION_ESR 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 "ESR Data for Payment Item" 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_BAPI_PPLAN_POSITION_ESR TYPE BAPI_PPLAN_POSITION_ESR.
The BAPI_PPLAN_POSITION_ESR table consists of various fields, each holding specific information or linking keys about ESR Data for Payment Item data available in SAP. These include PO_SUB_NO (ISR Subscriber Number), PO_REF_NO (ISR Reference Number), PO_CHECKDG (ISR Check Digit), NAME1 (Name 1 (surname for persons, otherwise company name))... 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. .