Solution : https://service.sap.com/sap/support/notes/71827 (SAP Service marketplace login required)
Key words :
additional key words time-based aggregation, elseif sy-index le mmc_nha, system calculates values incorrectly, time-based aggregation, -time-based aggregation, 'pretty print' function, preceding program lines, values equal, program sapmkcbr, reference program
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