404 Account in the Request does not exist

Hi, I am new to Retail and I managed to create a temporary token and access token via the one-time routine. That went quite well actually.
Now I try to get an inventory list throught the curl https://api.lightspeedapp.com/API/Account/7xxx1/InventoryCount.json. The response:
{"httpCode":"404","httpMessage":"Not Found","message":"The Account in the Request does not exist.","errorClass":"Exception"}
The access token works fine, also after 1800 secs I get a new access token, that works fine. I also tried my account name but that produces an InvalidResourceIDError, so that is out of the question.
What am I doing wrong here?
1 comment
Hi, never mind, I found it.
It's in the docs: https://developers.lightspeedhq.com/retail/endpoints/Account/
I didn't realise it wasn't the same as the 5-digit nr that you see when granting the application authorisation (you know- the thing with the big black button) ;-)