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.
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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!