T8A10 is a standard SAP Table which is used to store EC-PCA: Substitution for SD: Dependency data in SAP systems, such as SAP R/3, S/4HANA, depending on the version and release level.
The T8A10 table consists of various fields, each holding specific information or linking keys about EC-PCA: Substitution for SD: Dependency data available in SAP. These include KOKRS (Controlling Area), APPLIC (Validation/substitution application area), EVENT (Validation/Substitution callup point), SUBSTID (Substitution name)... 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. .