Unable to add a line to Blanket Purchase Agreement from Catalog

Hello,

When I try to add a line to Blanket Purchase Agreement from Catalog, I get the error "1 line(s) selected in the catalog were not be added to your document because the currencies could not be converted to the currency of the reference agreement'. I get the same error when I try to add the line from a Punchout site. I am able to create a requisition by Punching Out.

Has anyone seen this? Am I missing a setup?

Thanks.