A678 is a standard SAP Table which is used to store Bill to/CoCode data in SAP systems, such as SAP R/3, S/4HANA, depending on the version and release level.
The A678 table consists of various fields, each holding specific information or linking keys about Bill to/CoCode data available in SAP. These include KAPPL (Application), KSCHL (Condition type), KUNRE (Bill-to party), BUKRS (Company Code)... 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. .