TAPPL is a standard SAP Pooled Table which is used to store R/3-DDIC: Application classes data in SAP systems, such as SAP R/3, S/4HANA, depending on the version and release level.
The TAPPL table consists of various fields, each holding specific information or linking keys about R/3-DDIC: Application classes data available in SAP. These include RESPUSER (Person responsible for application class), AS4TEXT (Short Description of Repository Objects)... 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. .