MongoDB Error 223: Invalid Op Msg Flag

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Description

This error indicates that the MongoDB server received an 'Op Msg' (OP_MSG) message with an invalid or unsupported flag set in its header. It typically occurs when a client or driver sends a malformed message, preventing the server from correctly interpreting the request.

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Error Message

Illegal Op Msg Flag

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Known Causes

4 known causes

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Client/Driver Version Mismatch

The client application or MongoDB driver version is incompatible with the MongoDB server, leading to incorrect message formatting.

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Corrupted Network Packet

Data corruption occurred during transmission over the network, altering the message flags before reaching the MongoDB server.

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Malformed Custom Message

If a custom client or tool is manually constructing OP_MSG messages, it might be setting flags incorrectly or using deprecated values.

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Client Library Bug

A bug within the specific MongoDB driver or client library version is causing it to send malformed OP_MSG messages.

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Solutions

Coming Soon

Detailed step-by-step solutions for this error are being prepared. In the meantime, try these general troubleshooting tips:

General Troubleshooting Tips

Check the error message carefully for specific details
Review recent changes that might have caused the error
Search for the exact error code in the official documentation
Check log files for additional context
Try restarting the application or service

Find Help

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Related Errors

5 related errors