VDDD_HEADER is a standard SAP Table which is used to store Loans: Header Data - Lines Layout data in SAP systems, such as SAP R/3, S/4HANA, depending on the version and release level.
The VDDD_HEADER table consists of various fields, each holding specific information or linking keys about Loans: Header Data - Lines Layout data available in SAP. These include VERS (Layout Version), SUBTYPE (Header Subtype), LINE (Header Row), FIELD (Header Column)... 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. .