UPE_YS_DOCBUFFER 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 "Internal Buffer Documents for a Package" 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_UPE_YS_DOCBUFFER TYPE UPE_YS_DOCBUFFER.
The UPE_YS_DOCBUFFER table consists of various fields, each holding specific information or linking keys about Internal Buffer Documents for a Package data available in SAP. These include VERBUCH (Single-Character Indicator), DOC_ID (SEM-BPS: Doc_id as GUID), DOC_TITLE (Document Title), DOC_SIZE (Business Document Service: Component size)... 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. .