I have tried to save the category and getting below error in Magento2 admin.
URL key for specified store already exists
Please help me to fix this issue.
Try deleting the unused product's rewrites in URL rewrite table and check
delete from url_rewrite where entity_type='product' and entity_id NOT IN (Select entity_id from catalog_product_entity);
Make Sure you are NOT using same name for 2 category
Magento generates URL key from the name, if we try to add category with existing name it will show error
Hope it works!