3579953 - Intermittent error "Failed to fetch data" in a varying number of widgets.

You execute a SAC report that contains a page with several widgets, e.g. charts, which are supposed to show data from the same BW query. Many charts show message "Failed to fetch data.". There also might be an error popup occurring, showing message "MC 601 The requested object is currently locked by user ...". The affected widgets my differ for each time the report is executed. Mybe the issue occurs only once and is then completely gone for a while (even days, weeks) until it reoccurs.

SAC
BW Live
S/4HANA Live

MC 601, locked by user, RSRREPDIR, Failed to fetch data, generation. , KBA , LOD-ANA-LDC-BW , SAC Live Data Connection BW , BW-BEX-OT-BICS-INA , BW INA provider , Problem