TI-API: Python, Backlog create quote error 401

Hi TI support,

I was trying to create a quote but I got 401 error saying 'InvalidAPICallAsNoApiProductMatchFound'

I am sure I have my Sandbox client_id and client_secret correct since they work on PlaceOrder and RetriveOrder.

from TI_Backlog_API_V2 import TI_Backlog_Quotes

class Backlog_Example_Script:

    def __init__(self, client_id, client_secret, server):
        self.server = server
        self.client_id = client_id
        self.client_secret = client_secret
        self.quotesAPI = TI_Backlog_Quotes(client_id=client_id, client_secret=client_secret, server=server)

    def create_quote(self, part_number, quantity, customer_name):
        self.quotesAPI.add_item_to_quote(part_number=part_number, quantity=quantity)
        response = self.quotesAPI.post_quote(customer_name=customer_name)

        if response.status_code == 200:
            quote_number = response.json().get('quotes', [{}])[0].get('quoteNumber')
            print(f"Quote created successfully. Quote Number: {quote_number}")
            return quote_number
        else:
            print(f"Failed to create quote: {response.status_code}, {response.text}")
            return None

# Usage example
if __name__ == "__main__":
    client_id = 'masked'  # Replace with your actual client ID
    client_secret = 'masked'  # Replace with your actual client secret
    server = 'https://transact-pre.ti.com'  # Replace with the actual server URL
    part_number = 'SN74LS00N'  # Replace with the actual part number
    quantity = 10000  # Replace with the actual quantity
    customer_name = 'Test Customer'  # Replace with the actual customer name

    backlog_script = Backlog_Example_Script(client_id, client_secret, server)
    quote_number = backlog_script.create_quote(part_number, quantity, customer_name)

    if quote_number:
        print("Quote Number:", quote_number)
    else:
        print("Quote could not be created.")

Error message:

WARNING: Unexpected HTTP status code 401.
Failed to create quote: 401, {"fault":{"faultstring":"Invalid API call as no apiproduct match found","detail":{"errorcode":"keymanagement.service.InvalidAPICallAsNoApiProductMatchFound"}}}

Thanks,

David