For AI agents: the docs index is at https://developer.evonetonline.com/v1.0/llms.txt. Append .md to any documentation page URL to get its markdown version.
| Code | Result message | Remark |
|---|
| S0000 | Success | |
| Code | Result message | Remark |
|---|
| V0000 | field {} invalid format | |
| V0001 | field {} absent or empty | |
| V0002 | field {} invalid value | |
| V0003 | invalid interface version | |
| V0005 | json format error | |
| V0006 | HTTP method error | |
| Code | Result message | Remark |
|---|
| E0000 | Internal error | |
| E0001 | Unable To Process | |
| E0002 | failed | |
| E0003 | timeout | |
| Code | Result message | Remark |
|---|
| B0001 | store id not found | |
| B0003 | group id status error | |
| B0004 | store status error | |
| B0005 | merchant id status error | |
| B0007 | signature error | |
| B0008 | empty request | |
| B0009 | {transaction type} unsupported | |
| B0010 | payment brand unsupported | |
| B0011 | sponsor information lost | |
| B0014 | transaction status invalid | |
| B0016 | currency unsupported | |
| B0017 | invalid amount | |
| B0019 | merchantOrderID exists | |
| B0020 | merchantOrderID not found | |
| B0022 | {transaction function} unsupported | |
| B0023 | route error | |
| B0024 | LinkPay order not found | |
| B0026 | LinkPay order has been paid | |
| B0027 | LinkPay order closed | |
| B0028 | Authentication failed | |
| B0038 | acquirer status error | |
| B0044 | exceeds refund amount | |
