Those who have the GMS certification haven't taken the Strategic Talent Mobility Course. It is a separate purchase through the learning portal for professionals looking to advance their talent mobility knowledge and skills. This course adds the "T" to those who currently hold the GMS® certification.
If you are taking the GMS-T certification, it already has the Strategic Talen T Mobility Coursework included.
For more information, please visit, https://www.talenteverywhere.org/Certification/Global-Mobility-Specialist