Test Failover fails with error: Error - Failed to create snapshots of replica devices. Failed to create snapshot of replica device 300. SRA command 'testFailoverStart' failed for device '300'. Device is already in test failover [Device: 300] Run Stop Fail

Hello

I am testing a fail over but gets an error :

Error - Failed to create snapshots of replica devices. Failed to create snapshot of replica device 300. SRA command 'testFailoverStart' failed for device '300'. Device is already in test failover [Device: 300] Run Stop Failover Test on key

Can any one help me with this error.