backInfo parameter controls the response format.
Request parameters
Session token.
Order number.
Request signature.
Response format:
0 or empty = order number only; 1 = full order details; 2 = PDF URL info.Response
Response structure matches Get Order whenbackInfo=1, or Place Order when backInfo=2. When backInfo=0, data is just the order number string.
Example
Error codes
| Code | Meaning |
|---|---|
-1 | Token expired |
-2 | Required parameter missing |
-3 | Re-download failed |
3 | Data not found |
4 | Order status abnormal |
-30 | Signature wrong |
