What action results in a certificate holder's ability to practice being completely rescinded?

The action that results in a certificate holder's ability to practice being completely rescinded is revocation. Revocation means that the certifying authority has formally rescinded the certificate, which disallows the individual from practicing their profession entirely. This is a severe disciplinary measure typically enacted after serious violations of professional standards, ethics, or laws.

In contrast, probation, suspension, and sanctions are disciplinary actions that allow a certificate holder to continue practicing under certain conditions or for a specified period. Probation may involve oversight and compliance with specific requirements, while suspension temporarily halts the ability to practice but allows for potential reinstatement. Sanctions can refer to a range of penalties that may or may not include the loss of certification, but they do not unequivocally eliminate the ability to practice. Therefore, revocation is the only action that completely ends the practice rights of the certificate holder.