MDF Object Definition is not clickable / disabled in Instance Sync, even though the user has necessary permssion.
Reproducing the Issue
1. Go to Admin Center > Search for Instance Synchronization Monitor Tool from the beginning-->Select the company ID
We do not support sync of object definition from b1611 to b1702. The reason is there are changes made at the back end in b1702 and it is incompatible between the release. Hence we have disabled Object Definition.
As a workaround, you can perform export and import of ObjectDefinition.
Instance Sync, MDF Object Definition , KBA , LOD-SF-PLT-SYN , Instance Synch , Problem