No transfer structure is available for InfoSource in the source system

Hello

We have currently did a R3 and BW system copy for our new proj. our basis guys ran bdls to convert the existing transformation to adopt the new source and target.

Iam trying a load for a 7.0 datasource 0material_attr. I am getting a below error "No transfer structure is available for InfoSource 0MATERIAL_ATTR in the source system".

If it is 3x, i wil replicate the datasource and run RS_TRAN_DATASRC_ACTIVATE_ALL to activate the transfer rules.

But here i am left with no options as this is a bi7 transformation.

Please help me.

Thanks

Karthik