Error api create order "Unable to reserve inventory"

[lnbaymen]

Dear,

When i try to export an order from our platform  to shopify , i have an error:

Client error: `POST https://my-little-cozmo.myshopify.com/admin/orders.json` resulted in a `422 Unprocessable Entity` response:
{"errors":{"line_items":["Unable to reserve inventory"]}}

the request-id is a68dde7c-05fb-4c18-91d0-de8bc33ea090

can you explain us how we can resolve this error.

Thanks,

[HarryX]

Hello,

I had the same issue. 

X-Request-ID is: ad2e7142-1e20-4dcf-97ba-81b7c7840ed1.

What's the causes of this error?

Thanks!