As per the open Api documentation here, https://learn.microsoft.com/graph/api/synchronization-synchronizationschema-update?view=graph-rest-beta, the operation should be a PUT but PATCH has been defined in the open API file. <img width="925" alt="Image" src="https://github.com/user-attachments/assets/ce1c49d4-b341-4cc0-90c5-419b59bc8721" />