Gstr2b return new facility

Venkatesan Ramanujam (123 Points)

23 December 2020  
when my supplier files his return quarterly is it possible that the detail of relevant month not reflected in the corresponding month 2B. we have availed the input credit of one party in the month of October but it reflects in 2B in November only.
but we have filed the return with our corresponding month bills only though more input credit is available. but it warns that variation should not be more than 10%
Please explain.