Are you trying to add an External Provider? If so, don't do that and you should be able to save it with no problems. The error message really should be more specific about what the error really is, but this one is not.

From USA wazeopedia

Editor rank lock
Rank 1 and 2 editors have a few additional locks associated with their rank. For restrictions that are based on a "day"; the day resets at 0000 UTC.

Rank 1 locks
Cannot delete a segment unless they were the segment's creator
Rank 1 editors can still merge two segments to create one new segment, since this is not considered deleting the two original segments
Cannot set difficult turns
Cannot close a Update Request (UR), unless they were the reporter
Cannot add an external provider to a point or area place
Can only change the name on 30 road segments a day
Each "Street" name change, whether primary or alternate name, is considered as a separate change. Changing the primary and alternate name on a single road segment counts as two changes towards the daily limit.

Rank 2 locks
Cannot create difficult turns
Limited to deleting 10 road segments a day
Deleting segments that they created is not limited, but does count toward the limit. Ex. Rank 2 editor can delete 2 road segments created by another editor and then 8 segments that he/she created. The editor can continue deleting segments only if they were the creator. They cannot delete any other segments created by another editor until the next day.

Thanks! That was it. I was trying to link to a Google Place.