Mistake in gstr 3b

Hii

Have a query in GST, please suggest me.

If lower ITC claimed in GSTR 3B return whether it can be rectified later at time of GSTR1 , 2 & 2A filing. If yes please let me know how.

Today i mistakenly entered ITC of rs 327000 as 237000 and submitted GSTR 3B return, so at time of offsetting liability i will require to pay difference by cash otherwise my GSTR 3B will not submitted. So i am ready to pay this but whether this excess payment can be adjusted in next month return, of yes please tell how?