LDLBPG 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 "Routing usage in existing line balances" 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_LDLBPG TYPE LDLBPG.
The LDLBPG table consists of various fields, each holding specific information or linking keys about Routing usage in existing line balances data available in SAP. These include LINE (Line hierarchy), LBVER (Line balancing version), LBTXT (Line balance description), AENNR (Change 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. .