RMXTC_T12 is a standard SAP Table which is used to store TMS-API: Customizing - Trial Views data in SAP systems, such as SAP R/3, S/4HANA, depending on the version and release level.
The RMXTC_T12 table consists of various fields, each holding specific information or linking keys about TMS-API: Customizing - Trial Views data available in SAP. These include TAB_VIEW (Trial View), PROG (Program Name of the View), DYNPRO (Screen Number of the View), ICON (View Icon)... 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. .