Challan num begin with zero. portal making mistake

harish. (ca) (33 Points)

17 January 2022  

Friends, am helping a tax filing for friend and one of his challan number was beginning with zero. Its 06094. I have entered it correctly but portal put it  as 6094 in his return (4 numbers only). CPC has sent him tax credit mismatch notice for this reason

Yesterday I tried to revise it for him as second attempt but its happening again. the new portal is making this mistake. It is leaving zeros in beginning and making challan number short.

Am surprised. this hasnt happened before to me.  Any of you also facing this problem??