Material master data Initial download

Hi Gurus,

I am facing issues on the fresh downloads of Material master data from ECC to CRM, we just have couple of 100 materials to be downloded to CRM,but some of materials getting Bdoc erros:

1) Category for Material Group XX does not exist,

2) Category for Product hierarchy  XXXXXXXXXXXXXXXXXX does not exist.

i have downloaded the Customization Objects DNL_CUST_PROD1, DNL_CUST_PROD0.

Kindly Help me on this.

Thanks & Regards,

Sunil B