Stock Upload in EWM through /SCWM/ISU

Hi Experts,

I understand that we can use subject mentioned t code for stock upload in EWM but how we will mass load (@50000 material stock)? I do not see to run this code in background. This tcode will update  stock in ECC as well. I fear if we run this in foreground and system connection goes then it will be problem.What shall be our approach?

Please reply.

Thanks & Regards,

Prashant Dhakane