Can a remarriage(for both) be registered as 1st marriage

Correct information to be submitted to the public authorities. Otherwise it is an offence under the law. 

It is mandatory to show your legal status while applying for a marriage certificate. If you are divorced then that status has to be shown. However failure to show the legal status doesn't invalidate the marriage certificate issued. B

No, it is not necessary for parties to show their respective orders granting them divorce. It is sufficient that parties are unmarried at the time of marriage and registration of marriage with registrar. Marriage and marriage certificate are valid. Merely mentioning the in form as first marriage is not the valid ground for divorce or to nullify the marriage. If any wrong information has been given by either party then there are other remedies but not a valid ground for nullity or divorce. The fact is that parties should not be married nor either party should have living spouse at the time of second marriage and this the basic ground for second marriage. Registration of marriage does not give any validatation nor non registration of marriage invalidate a marriage. 

 It is mandatory to disclose the fact of issuance of marriage certificate before the Court during divorce proceeding which stands automatic annulled (cancelled), even if it was not produced before the Court. The certificate has no relevance / validity in consequence of grant of decree of divorce.

Since both the parties were divorcee at the time of registration of second (subsequent) marriage it is mandatory to submit decree of divorce granted by competent court..

 

The posting suggests deeper issues. Please post complete facts.

better put facts of the case.

Marriage Certificate is not valid, it has been obtained by playing fraud with the authority concerned. but the marriage is valid and marriage can not be declared null and void on this ground.