Create nested categories via API v3

[lysenko]

Congratulations for 2.5 release!
We waited for it and started discovering the API immediately.
Here is the question,
I am trying to create nested categories via API.
When I pass category id as parent, I get woocommerce_api_invalid_product_category_parent
Here https://github.com/woothemes/woocommerce/blob/master/includes/api/class-wc-api-products.php#L676 I noticed that the parent is looked at by term_taxonomy_id. Is the term_taxonomy_id different than the category id that I get from /products/categories endpoint?

[claudiosanches]

Need to be the ID.
Show me your JSON.

[claudiosanches]

Well, tested and works fine.

Is the term_taxonomy_id different than the category id that I get from /products/categories endpoint?

Nop, term_taxonomy_id is the category ID, has only one ID for each term.

[lysenko]

Sorry for delay, I still have no success.
Unfortunately I cannot share the keys to the company site, here is a curl example without the keys.
curl --insecure https://woocommerce-demo.repairshopr.com/wc-api/v3/products/categories -u ck_XXXXXXXX:cs_XXXXXX
Result:
{"product_categories":[{"id":49,"name":"Clothing","slug":"clothing","parent":0,"description":"","display":"default","image":"","count":0},{"id":47,"name":"Default","slug":"default","parent":0,"description":"","display":"default","image":"","count":0},{"id":46,"name":"Foobar","slug":"foobar","parent":0,"description":"","display":"default","image":"","count":3}, {"id":48,"name":"Prepay Hours","slug":"prepay-hours","parent":0,"description":"","display":"default","image":"","count":0},{"id":50,"name":"Subcategory","slug":"subcategory","parent":1,"description":"","display":"default","image":"","count":0}, {"id":51,"name":"Subcategory","slug":"subcategory-grouped","parent":3,"description":"","display":"default","image":"","count":0}, {"id":52,"name":"Web Created","slug":"web-created","parent":0,"description":"","display":"default","image":"","count":0}, {"id":53,"name":"Web created subcategory","slug":"web-created-subcategory","parent":52,"description":"","display":"default","image":"","count":0}]}

Notice that the first category ID is 46, older category ids were deleted sometime ago.
Notice that there is "Web Created" category and subcategories, I made them in the browser.
Notice that there is {"id":50,"name":"Subcategory","slug":"subcategory","parent":1,"description":"","display":"default","image":"","count":0}
Subcategory created via API for a non exiting parent, it seems that the code is missing logical negative operator somewhere. Or API allow to use only old, non existing category ids as parent.

And finally failing request
curl --insecure -X POST https://woocommerce-demo.repairshopr.com/wc-api/v3/products/categories -u ck_XXXXXXXX:cs_XXXXXXXXX -H "Content-Type: application/json" -d '{ "product_category": { "name": "New Subcategory", "parent": 52 } }'
The response is:
{"errors":[{"code":"woocommerce_api_invalid_product_category_parent","message":"Product category parent is invalid"}]}

[claudiosanches]

Notice that the first category ID is 46, older category ids were deleted sometime ago.

Not a API issue, maybe a problem in our DB.

Subcategory created via API for a non exiting parent, it seems that the code is missing logical negative operator somewhere. Or API allow to use only old, non existing category ids as parent.

The category need to exists.

Seems like a problem in your DB, since we use just WP functions to create and update categories.
I tested and it works fine... It seems you are searching for the problem in the wrong place or using the wrong database (maybe have 2 installations).