SAP Message RSM684 - The last delta update contained errors. No new delta update possible.

Procedure
As the last delta request was not correctly updated, renewed deltaloading is not possible until after a correct update.
If you wish to reload the data of the last request you must attempt arenewed request of these data packet (with a subsequent request of thedata packet in the Scheduler).
Using the QM-Action pushbutton in the monitor, you can set thelast delta request to 'successful'. A renewed delta request is thenpossible.
However, in this way some applications lose their old, alreadydelivered data, meaning that it can no longer be loaded again.