TDMS _ BPL- Data transfer start - activity in error

Dear All,

I'm trying to execute a BPL scenario.

I have selected the purchase order object with a selection on company code and data of creation of purchase order.

I did not have any issue except during the Data Transfer Step.

This step has finished with "Error Status", mainly for duplicate key error.

So i have executed the Troubleshooting activity, (change write behavior step)

Badly, there still an issue:

Please find below the error message:

Run *********** resulted in duplicates at modify for unique secondary index.

Benjamin

Subactivity in error: MERGEMCHBH

Does anyone know how i can solve this issue?

Regards