Create sales order through LSMW

Hi all,

Recently I have to do data migration and create sales order through LSMW.

I used the following standard Batch/Direct Input method.

Object 0090

Method 0000

Program RVINVB10

However, when I do the last step of LSMW "Start Direct Input Program"

Errors 'file " " is not open' occurs and the error screen is captured and attached.

I have no idea why this error occurs. It seems that the converted file in application server cannot read by program RVINVB10.

Please help me.

ManKit