ITC query

ANJANI KUMAR (INTER+CPT) (115 Points)

05 June 2018  
Purchase ordered on 31.03.18 ..on the same date entered in books of accounts..and filled GSTR3B by considering above purchase..

actual date of invoice is 01.04.2018

In April month tax has been paid by considering above...

what is the consequences for period difference ITC availed....

thanks in advance