A108 is a standard SAP Table which is used to store Vendor Hierarchy / Material data in SAP systems, such as SAP R/3, S/4HANA, depending on the version and release level.
The A108 table consists of various fields, each holding specific information or linking keys about Vendor Hierarchy / Material data available in SAP. These include KAPPL (Application), KSCHL (Condition type), EKORG (Purchasing Organization), LHIENR (Vendor number of vendor hierarchy)... 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. .