RMXTC_T15 is a standard SAP Table which is used to store TMS-API: Customizing - Technical Object Relationships data in SAP systems, such as SAP R/3, S/4HANA, depending on the version and release level.
The RMXTC_T15 table consists of various fields, each holding specific information or linking keys about TMS-API: Customizing - Technical Object Relationships data available in SAP. These include TRIALTYPE (Trial Type), SUB_OBJTYPE (Technical Object Relationship)... 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. .