Reference product uses a different class

Hi, All,

We have some problem when activating integration model for master data - getting message "Reference product uses a different class".

In our case in ERP system in master data was modified class, earlier in APO system product has already been assigned to other class.

In APO system product was removed for location and globally but next activation of the integration model, we getting the same problem "Reference product uses a different class".

Please tell, how we can modify or delete product in APO for transfer it from ERP successfully?

Regards, Evgeniy.