4.4 About "This issue type is not allowed to be set here to avoid endless loops"

When adding the Link Issue Type, if you select a project & issue type that have been used as an Automatic Issue Type, you may be prompted with "This issue type is not allowed to be set here to avoid endless loops". The closed-loop setting may lead to infinite loop problems in status change, so it is prohibited.

If you do need several issue types to influence each other repeatedly, you should consider adding new issue types to avoid the circular linkage.