BDOC Error: A product with the XXXXX already exists

Hi Experts,

1) I am replicating products from ECC to CRM and getting Bdoc's in error state stating error "A product with the already exists". I have checked in table

COMM_PRODUCT in CRM but entries are not exists for these error products.

Message no. SMW3018

2) I found somehow initial load is also not responding properly when replicating Materials from ECC->CRM because products are remaining in ECC and then I am replicating it through request load. What is the issue? Please help.

I am using ECC6.0 and CRM 7.1 versions. Please help to rectify this.

Regards,

Varun