MyChat Client error #0300: incorrect ID (XX) of the common user group
"Debugging and troubleshooting", "List of MyChat Client errors", "Error #0300".
Error
Error #0300: incorrect ID (XX) of the common user group
Error description
It turned out, that when requesting a user list from a common group, the group number specified incorrectly or does not exist.
Problem solution
If you work with MyChat via API or directly using an open network protocol, change the transferred data. Do not confuse a user group with contact groups and rights group, because they are completely different things.