"Table will be converted with small defects. Click yellow marked fields for more details" - This message implies that conversion of the selected table can face some troubles. Click twice on yellow marked items to solve the problem.
Example: As you can see marks_outbox table is marked yellow. It means that some fields can cause conversion problems.
Please, double click the yellow marked fields to find the cause for this warning. Now can see that the field named "id" provokes the following message: " Warning! Autoincrement field should be a Primary Key ". After you eliminate the error all objects that were previously marked yellow turn into non-problematic.
