TDS deduct but deposit late

Dear Sir

We have deduct TDS on rent for 1 quarter April to June 2020. but deposit in Sep month 2020 due to covid 19 and Same month we have filed TDS return. but it was not reflect in 26 As to vendor. During filling challan 281 and TDS return i have selected assessment year 2020-21 so can be reason behind or any more.