Paypal Entity Unprocessable

Hey, i’m trying to sell a Bundle of 2 Day Event Tickets as a Weekend Pass and it does not work, when i try to pay with Paypal.

i get the Following message.

[UNPROCESSABLE_ENTITY] The requested action could not be performed, semantically incorrect, or failed business validation. https://developer.paypal.com/docs/api/orders/v2/#error-CANNOT_BE_NEGATIVE

is this known?