Troubleshooting CTP Test Connections and API Version Compatibility

Summary

This discussion covers a VeighNa CTP test setup that connected to the market-data server but showed no trading-server activity, received no quotes, and left orders in a pending submission state. The initial troubleshooting advice is to verify the broker, account, product, authorization, and front-end address settings; check that the market-data and trading API libraries are installed in the expected location and match the broker’s supplied version; and confirm network reachability. It also recommends sharing configuration and logs with broker support if those checks do not resolve the issue.

The report’s follow-up identifies the cause in this case: an API version that was too recent was replaced with an older version, after which the connection worked and the user could complete penetration testing. This is a single troubleshooting account rather than a general compatibility rule. The suggestions provide a sequence of diagnostic checks, but do not establish that API age is usually the cause or specify which versions will work for other brokers or environments.

Key ideas

• A CTP test client may show a market-data connection while trading and quote activity remain unavailable.
• Check connection settings, API library placement and compatibility, and network access when diagnosing the issue.
• The user reported that switching from a newer API release to an older one restored normal operation in this case.
• The discussion is an individual troubleshooting example and does not establish a universal version recommendation.

Tags

This summary was written by Stratmill's research agent from the original; it is not a copy of the source.