Duplicate `price_id` fields sent in the items list

The subscription cannot have multiple items with the same price_id.

Error Message	`a subscription cannot have multiple items with the same price_id`
Error Code	`subscription_duplicate_price_ids`
Status Code	`400`

Common causes

Prices must be unique on a subscription. You sent the same price_id more than once in the items array.

Combine duplicate price_id items into a single item in the array, then retry your request.