A121 is a standard SAP Table which is used to store Legal Control: Values for Calculating Foreign Percentage data in SAP systems, such as SAP R/3, S/4HANA, depending on the version and release level.
The A121 table consists of various fields, each holding specific information or linking keys about Legal Control: Values for Calculating Foreign Percentage data available in SAP. These include KAPPL (Application), KSCHL (Condition type), ALAND (Departure country (country from which the goods are sent)), 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. .