A015 is a standard SAP Pooled Table which is used to store Not Used in Standard data in SAP systems, such as SAP R/3, S/4HANA, depending on the version and release level.
The A015 table consists of various fields, each holding specific information or linking keys about Not Used in Standard data available in SAP. These include KAPPL (Application), KSCHL (Condition type), LIFNR (Vendor Account Number), MATKL (Material Group)... 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. .