Batch input executed in program on RF gun?

Hi,

My client is scanning labels into a program on an RF handheld device.

This program later executes a CALL TRANSACTION tcode USING bdcdata (in mode 'N'). They are actually trying to execute a batch input of the transaction HU02.

When we execute it directly in SAP, the program works correctly. When we execute it on the handheld device, we get the following error:

Control Framework: Fatal error - GUI cannot be reached

Is this error because of the size of the windows on the device? Is it even possible to execute a batch input of a standard transaction in a program on a handheld device? Or is there a way to fix this?

Thank you!