VDDD_HEADER_COL is a standard SAP Table which is used to store Loans: Header Data - Columns Layout data in SAP systems, such as SAP R/3, S/4HANA, depending on the version and release level.
The VDDD_HEADER_COL table consists of various fields, each holding specific information or linking keys about Loans: Header Data - Columns Layout data available in SAP. These include VERS (Layout Version), COL (Header Column), WIDTH (Column Width in Pixels), GAP (Gap Between Columns in Spaces)... 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. .