FMBLEXTFLD is a standard SAP Table which is used to store Field Selection for Derivation Tool in BL Ext - Field Name data in SAP systems, such as SAP R/3, S/4HANA, depending on the version and release level.
The FMBLEXTFLD table consists of various fields, each holding specific information or linking keys about Field Selection for Derivation Tool in BL Ext - Field Name data available in SAP. These include STRUCTURE (Derivation Tool Structure Names), FIELD (DDIC field name), TEXT (Table field description)... 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. .