The SAS Certified Base Programmer for SAS 9 credential is a prerequisite to obtaining the SAS Certified Advanced Programmer for SAS 9 credential. If you do not hold a SAS Certified Base Programmer for SAS 9 credential prior to taking and passing the SAS Advanced Programming for SAS 9 exam, the SAS Certified Advanced Programmer for SAS 9 credential will not be awarded until the prerequisite has been met.