LSMW Error - Last step

Hello,

I created an LSMW for AS02 and all steps were carried out successfully (Display, convert shows the correct mapping).

The step (CREATE BATCH INPUT SESSION) shows this error :

BDC_INSERT, screen .&. is invalid

Message no. 00339

Diagnosis

Error creating a batch input session.

Why is that? This is the last step.

Any help is welcom

Regards

roger