i was trying to sync the LE entity by dualwrite. but error was like this.

when i opened the log, it saied,
>>Dual write failure - Plugin registration failed: [(Unable to sync dual write metadata for AX. Error [Bad Request], The remote server returned an error: (400) Bad Request.)], One or more errors occurred.
Any clue about this one??
btw, i also checked the data import/export framework service on VM was running.