Custom Macro placement detailed route issue: Maze Route cannot find path of net

Tool: Detailed Routing

Subcategory: Detailed routing failure

Conversation

I am using a custom macro placement script. Changing the macro position from default to any other formation causing error in detailed routing.

[ERROR DRT-0255] Maze Route cannot find path of net (some net) in worker of routeBox (34000 75000) (41000 45000)

Is it an algorithm error, any idea?

Is automatic macro placement creating that error?

This is a problem in detailed routing that would require a test case to investigate. Can you provide one?

I don't expect this error from the router even with a bad macro placement.

How do you do custom macro placement?

It would be great to have a test case for this problem as is so we can fix it in addition to any workarounds in placement to avoid it.