"Debugging and troubleshooting", "List of MyChat Client errors", "Error #0317".
 
Error

Error #0317: such menu name already exists, duplicated are forbidden
 

Error description

The command sent to the server contains a custom menu name that is already used for another menu. Names must be unique and must not duplicate.
 
Problem solution

If you work with MyChat via API or directly using an open network protocol, change the transferred data.