TKZU1 is a standard SAP Table which is used to store Overhead Base Cost Elements data in SAP systems, such as SAP R/3, S/4HANA, depending on the version and release level.
The TKZU1 table consists of various fields, each holding specific information or linking keys about Overhead Base Cost Elements data available in SAP. These include KOKRS (Controlling Area), KAPPL (Application), BKOND (Condition type), KKOMP (Components of base condition types)... 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. .