Understanding Tax IDs for T5018 Suppliers
Suppliers (payees) use W-9 returns to report their identification numbers (account number or SIN) to a payer. A nine-digit identification number is required for each supplier. The JD Edwards EnterpriseOne Accounts Payable system uses this information for the identification number on T5018 returns. The CRA requires that you report the identification number. You set up the Tax ID using the Tax ID field in the Work With Addresses program.
For some foreign suppliers, an identification number might not be required.