When does my RSA/RSG Certificate/Statement of Attainment expire?

Please check the following links - http://www.business.qld.gov.au/industry/liquor-gaming/liquor/training/rsa,http://www.business.qld.gov.au/industry/liquor-gaming/liquor/training/rsg

What is a VET (Vocational Education and Training) Statement of Attainment? A VET statement of attainment is a statement (similar to a certificate) given to a person who has satisfied the requirements of a unit of competency or modules of a VET course. A VET Statement of Attainment may only be issued by a RTO. A VET Statement of Attainment does not expire.