The errors related to the "tier_variation" level

The errors related to the "tier_variation" level

First of all, We define the level of "tier_variation" as follows:

For example, if an item has no model, there's no tier variation.

If the item has a color model with options such as red and blue, that's a 1-tier variation.

If the item has both a color model and a size model with options such as [red,XL] and [blue,S], that is a 2-tier variation. API: "v2.product.init_tier_variation" Error: The level of tier-variation not change. Explanation: The "v2.product.init_tier_variation" API can only be used to change the tier variation level, like from 0 tier variation to 1 tier variation, from 1 tier variation to 2 tier variation, or from 2 tier variation to 1 tier variation, from 1 tier variation to 0 tier variation. When you get this error, it means your request didn't change the tier variation level. If you set a color model with options, red and blue, for an item, and now you want to add one more color, black, you can call the "v2.product.update_tier_variation" API. API: "v2.product.update_tier_variation" Error: Item tier-variation level not same Explanation: The "v2.product.update_tier_variation" API can only be used to add or delete model(s) without changing the tier variation level. If you set a color model with options, red and blue, for an item, and now you want to change the tier variation level, such as adding a size model with options, S and XL, you need to use the "v2.product.init_tier_variation" API.