multi-currency AP INVOICE ENTRY

When do multi-currency AP INVOICE ENTRY, SOMETHING HAPPENED AS FOLLOW:

1 W Warning. Exchange rate information does not exist in Common Services for

converting USD to CAD using rate type SP and rate date 11/13/2008.

11:33:12

2 W Warning. Document currency USD differs from tax reporting currency CAD for tax

group OUT.

11:33:12

3 W Warning. Exchange rate information does not exist in Common Services for

converting USD to CAD using rate type SP and rate date 11/13/2008.

11:33:13

HOW TO RESOLVE IT?