Unable to load Product MDT for Unified Planning Area

Hi,

While uploading Product MDT template, I am getting the following error:
"Ambiguous values found for non-root attributes BRAND,PRDGROUP in source master data type SI1PRODUCT using root attributes BRAND,PRDGROUP for planning level SAPIBP1.MTHPRODFMLCUSTRGNCURR"

I checked the configuration of SAPIBP1.MTHPRODFMLCUSTRGNCURR and found theat the Root attribute for Product MDT for this level is "PRDFAMILY".

Please suggest some way out this issue.

Regards,
Saabitri