If you are done any (or Many) following Exams those are already Retired.
MB6-892 Microsoft Dynamics AX Distribution and Trade
MB6-893 Microsoft Dynamics AX Financials
MB6-895 Financial Management in Microsoft Dynamics 365 for Finance and Operations
MB6-896 Distribution and Trade in Microsoft Dynamics 365 for Finance and Operations
refer: docs.microsoft.com/.../retired-certification-exams
the new role-based exams are as follows
MB -300: Microsoft Dynamics 365: Core Finance and Operations
MB -310: Microsoft Dynamics 365 Finance
MB -320: Microsoft Dynamics 365 Supply chain Management, Manufacturing
MB -330: Microsoft Dynamics 365 Supply chain Management
you can earn preferred (Associate )certifications using the following exam combinations
MB 300 + MB 310 Microsoft Dynamics 365 Finance Functional Consultant Associate
MB 300 + MB 320 Microsoft Dynamics 365 Supply chain Management, Manufacturing Functional Consultant Associate
MB 300 + MB 330 Microsoft Dynamics 365 Supply chain Management Functional Consultant Associate
It's good to start with MB-901: Microsoft Dynamics 365 Fundamentals, if you were out of touch & need to refresh knowledge up to date. But it's not mandatory.
here is some helpful links :
Certification Poster: query.prod.cms.rt.microsoft.com/.../RE4CcQL
Certification Path Finance : query.prod.cms.rt.microsoft.com/.../RE4C56Y
Certification Path Supply chain: query.prod.cms.rt.microsoft.com/.../RE4CfjF
Certification path Manufacturing : query.prod.cms.rt.microsoft.com/.../RE4CcRH
Hope this helps,
Thanks & Regards,
Amith Prasanna