I am using the PayPal invoice in python, and as the title says, I get this error. The thing is, is that in Postman, creating a draft invoice fine; and in python creating the draft invoice is the only issue I have. I did do this yesterday and I had no errors.

If i'm gonna be honest I think it is something with the data but i copied it (for testing) from here (and changed the details i needed to change): https://developer.paypal.com/docs/invoicing/integrate/#:~:text=%7B%0A%20%20%22detail%22%3A%20%7B,%7D%0A%20%20%7D%0A%7D

Response number is 400 if thats any help

Python code creating draft invoice

import requests
import json
token="my token would be here"
link="https://api-m.sandbox.paypal.com/v2/invoicing/invoices"
headers={
    "Content-Type": "application/json",
    "Authorization": f"Bearer {token}"
}
with open("Json Files\draft.json","r") as file:
    data=json.load(file)

response=requests.post(link,data=data,headers=headers)
print(response) #reponse 400

with open("Json Files\Result.json","w") as file:
    json.dump(response.json(),file,indent=4)

Json result data data

{
    "name": "INVALID_REQUEST",
    "message": "Request is not well-formed, syntactically incorrect, or violates schema.",
    "debug_id": "30d2ac87b6223",
    "details": [],
    "links": [
        {
            "href": "https://developer.paypal.com/docs/api/invoicing/#errors",
            "method": "GET"
        }
    ]
}

I expected this: https://developer.paypal.com/docs/invoicing/integrate/#:~:text=of%20the%20invoice.-,Step%20result,W44B%2DKRGF%2DJM6R%2D26VU%22%2C%0A%20%20%20%20%22method%22%3A%20%22GET%22%0A%7D,-2.%20Send

API is expecting string, not dict

response=requests.post(link,data=json.dumps(data),headers=headers)