Dump when calling RSNAST00 in background method

[Jekel, Katja]

Hello all,
 
I get the Dump DYNPRO_SEND_IN_BACKGROUND when I call RSNAST00 via SUBMIT in
a synchronous background method.
The report RSNAST00 can usually be executed in background task without any
problem, it does not send any Dynpro if sy-batch = 'X'.
 
Seems that sy-batch is initial in my background method???!!!
 
Thanks for any help.
 
Regards,
Katja