Please note that there are known issues, some of them beyond our control and due to limitations on Atlassian's part.

Options configuration Size Limitation

The storage limit for all custom field configurations is 128KB or 131,072 characters. Therefore, if you have a large number of entries in MLCS, you may reach a point where you cannot add more.

If you encounter this limit, we suggest reducing the number of options or abbreviating their labels if possible.