It is madotory to sent legal notice for eviction of tenants. The said notice is statutory in nature otherwie you cannot prosecute the tenants.Their is no bar in issuing 2nd legal notices. However one has to be prudent in marking the required legal notice which suits his case.
However if the second notice is not properly drafted or is indifferent to the earlier one , the defendant may use such document (legal notice) to contracit your first legal notice.
Should you have any further query ,for assistance you may send an email to the following madhurim2@yahoo.com
N.V.SHRAVAN KUMAR
ADVOCATE
A.P HIGH COURT.