DD03L is a standard SAP Table which is used to store Table Fields data in SAP systems, such as SAP R/3, S/4HANA, depending on the version and release level.
The DD03L table consists of various fields, each holding specific information or linking keys about Table Fields data available in SAP. These include FIELDNAME (Field Name), AS4LOCAL (Activation Status of a Repository Object), AS4VERS (Version of the entry (not used)), POSITION (Position of the field in the table)... 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. .