FMRBA is a standard SAP Table which is used to store Actual line item table data in SAP systems, such as SAP R/3, S/4HANA, depending on the version and release level.
The FMRBA table consists of various fields, each holding specific information or linking keys about Actual line item table data available in SAP. These include GL_SIRID (Record number of the line item record), RLDNR (Ledger), RRCTY (Record Type), RVERS (Version)... 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. .