Here we would like to draw your attention to GL26 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). GL26 is a transaction code used for Reverse rollup in SAP.
It comes under the package for FI-SL rollup (GBRU). When we execute this transaction code, SAPMGLRV is the normal standard SAP program that is being executed in background. Transaction code GL26 is included in the SAP component for SAP_FIN.
SAP GL26 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 → Reverse
Transaction GL26 technical data table