how to Reconcile filing of excess sale and claimed ITC amount in 3b of October

the excess ITC claim in Oct can be adjusted in march month,
eg : excess ITC avail 100 in october
march month ITC is 150
then take only 50 as itc in month of march 3b

Please go to try to it...

Take Your all actual transactions values from July to February.....
Take Your all returned values from July to February.....

After calculate and Check out the mismatch amounts. Go to take further steps...

It's just my opinion only. Not for suggestions and not in any of the law in GST***

Reconcile Ur books with return filed (3b) monthwise , take out difference if any & adjust it in Ur march 3b