Is this a purpose of an IdentitylQ certification?

Yes, this is indeed one of the primary purposes of an IdentityIQ certification. Certifications are conducted to attest to a user's system access, ensuring that each user has appropriate and justified access rights to applications, data, and systems within the organization. This is central to IdentityIQ’s access governance and compliance processes.

References:

SailPoint IdentityIQ Certification Guide

SailPoint IdentityIQ Governance Overview