A089 is a standard SAP Table which is used to store SD Document/Material data in SAP systems, such as SAP R/3, S/4HANA, depending on the version and release level.
The A089 table consists of various fields, each holding specific information or linking keys about SD Document/Material data available in SAP. These include KAPPL (Application), KSCHL (Condition type), VBELN (Sales and Distribution Document Number), MATNR (Material Number)... 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. .