Struggling with basic Sandbox operations

[teknetik]

Trying to get comfortable with the SP_API I created a small script just to authenticate me and list my orders. I want to move on try create inbound shipments. I doubt Amazon would appreciate me testing this code and fake shipments in production so I wanted to test in sandbox.

However even the most basic requests fail:

`from sp_api.base import Client, Marketplaces
from sp_api.api import Orders, Catalog, CatalogItems
import os

Get credentials from environment variables

credentials=dict(
refresh_token=os.getenv('AMAZON_REFRESH_TOKEN'),
lwa_app_id=os.getenv('AMAZON_LWA_APP_ID'),
lwa_client_secret=os.getenv('AMAZON_LWA_CLIENT_SECRET'),
aws_secret_key=os.getenv('AMAZON_AWS_SECRET_KEY'),
aws_access_key=os.getenv('AMAZON_AWS_ACCESS_KEY'),
role_arn=os.getenv('AMAZON_ROLE_ARN'),
)

CreatedAfterTime = '2020-01-01T00:00:00Z'

res = Orders(credentials=credentials, marketplace=Marketplaces.GB)
data = res.get_orders(CreatedAfter=CreatedAfterTime)
data_dict = data.payload
print(data_dict)`

Error:

sp_api.base.exceptions.SellingApiBadRequestException: [{'code': 'InvalidInput', 'message': 'Could not match input arguments', 'details': ''}]

Could anyone please offer any advice as to what I might be doing wrong. I have code to get inventory that works in prod too and fails with the same error.

[teknetik]

I modified my code:

res = Orders(credentials=credentials, marketplace=Marketplaces.GB) data = res.get_orders(CreatedAfter='TEST_CASE_200', MarketplaceIds=["ATVPDKIKX0DER"]) data_dict = data.payload print(data_dict)

If I change the market place back to UK it fails, so that was probably my problem. Testing for US market place I dont think will cause me issues.

Same with my inventory request:

inventory = Inventories(credentials=credentials, marketplace=Marketplaces.US)
Has to be US with my app authorised in ACS for the US marketplace. Unless anyone can tell me different I am assuming sandbox only works for the US marketplace?