How to maintain a Vendor currency in SRM

Hello

Can anyone tell me how to maintain a Vendor currency in backend.

ours is a classsic scenario.

I had an issue, where the shopping has not been created in the backend. when we try to resubmit the shopping cart it throws an error

in the transaction BBP_PD it throws an error saying that vendor currency is missing.

when I checked in the backend for that vendor the currency is existing.

So now my question is like, other than backend do we maintain the vendor currency in SRM also? or only in back end.

as our vendors are replicated from backend.

Please clarify.

Best Regards,

Sairam