TI-API: I have an ERR-TICOM-ORDER-API-GEN-0500 error in the request interface, how can I solve it?

I am requesting an order-related interface, and the following error occurs

Reuqest:

{ "order": { "checkoutProfileId": "xxxxxxx", "lineItems": [ { "tiPartNumber": "NE555DR", "quantity": 1 }, { "tiPartNumber": "LM358PWR", "quantity": 1 } ] } }

Errors:

I would like to know how to solve it?