Outstanding demand already paid but new notice

gekco (B.Com) (170 Points)

09 April 2020  

I had an outstanding demand of Rs 510 under sec 143(1)(a) for Ass Year 2010-2011 in my account. I went ahead and paid using the link given on website and got challan copy on Mar 19,2020 . The payment is also showing in Form 26as for that ass year,

But on Mar 23,2020 a new demand of amount 520 is generated for same year under 220(2) by CPC. Please suggest what should I do ? Is this new DIN uploaded by mistake or they want me to pay Rs 10 but uploaded notice of 520.

Please kindly give advise