com.apigee.zookeeper.ZooKeeperException -Error Deploying

[#1]

Sometimes I am receiving errors as below while trying to save or deploy my flows,

Error Deploying Revision 1 to test com.apigee.zookeeper.ZooKeeperException{ code = zookeeper.ErrorCreatingDirectory, message = Error creating directory for path : /organizations/orgname/environments/test/apiproxies/MyWebservice/revisions/1/statuses/3cb53ac7-7474-4f9a-aa37-86ca9796fdb1, associated contexts = []}.

I did a small change in AssignMessage policy.But I dont think this error is related to the change I have done.Strangely,after sometime this error disappears and flow gets deployed or saved successfully.

What could be the issue?