MyChat Client error #0299: you specified a non-existent ID (%d) of the common user group, or the personal group with such ID does not belong to you
"Debugging and troubleshooting", "List of MyChat Client errors", "Error #0299".
Error
Error #0299: you specified a non-existent ID (XXX) of the common user group, or the personal group with such ID does not belong to you
Error description
When adding a user group for accessing Kanban project you specified incorrect numeric ID, or this ID is personal and does not belong to you.
Problem solution
If you work with MyChat via API or directly using an open network protocol, change the transferred data.