This would depend on your company's specific expense policy. We would not have access to that information here, but if you reach out to your Concur Administrator, they should be able to assist you. If you do not have that person's contact information, many times it is listed on the "Company Notes" section of Concur or you could reach out to your supervisor, finance or IT to have them direct you.
@kgupt this should be possible, but will depend on your company's rules. Most of our customers have rules that will flag your expenses if they are over 60 or 90 days old. Most of the time the rule will still allow you to submit but have a reminder message to be more timely in submitting your expenses.
The only way you will know if your company allows expenses from April is to create a report, enter the transaction date and all other expense details then save the expense. If there is a rule in place, you should see a yellow or red icon on that expense entry with the exception message as well.