(1) A credit information provider shall verify an individual's personal public service number (PPSN) against an original or copy of any of the following documents -

(a) any correspondence from the Department of Social Protection or the Revenue Commissioners addressed to the individual showing the individual's PPSN,

(b) P21, Tax Assessment or Notice of Tax Credits,

(c) Receipt of Social Welfare Payment,

(d) Medical Card / Drug Payment Scheme (DPS) Card,

(e) Payslip, P60/P45.

(2) If a credit information subject cannot provide any of the documents specified in paragraph (1) the credit information provider may verify a credit information subject's PPSN using any other document or process that may reasonably be relied upon for the purpose.

(3) A credit information provider shall verify any other number allocated to the individual for the purposes of tax against any document that may reasonably be relied upon for the purpose.

(4) In determining the reliability of any document referred to in paragraph (2) or (3) the credit information provider shall have regard to the following:

(a) the nature of the body by whom the document was issued;

(b) the nature of the document;