Here we would like to draw your attention to GL23 transaction code in SAP. As we know it is being used in the SAP FI-SL (Special Purpose Ledger in FI) component which is coming under FI module (Financial Accounting). GL23 is a transaction code used for Display rollup in SAP.
It comes under the package for FI-SL rollup (GBRU). When we execute this transaction code, SAPMGLRE is the normal standard SAP program that is being executed in background. Transaction code GL23 is included in the SAP component for SAP_FIN.
SAP GL23 menu path
See the possible menu paths to access the same report by avoiding entering the transaction code.
Accounting → Financial Accounting → Special Purpose Ledger → Periodic Processing → Rollup → Display
Transaction GL23 technical data table