"Debugging and troubleshooting", "List of MyChat Client errors", "Error #0320".
 
Error

Error #0320: menu identifiers list contains incorrect or non-existent elements
 

Error description

A command sent to the server contains incorrect indexes of a custom menu MyChat Client. The string must contain several numbers divided by commas.
 
Problem solution

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