Respected sir/ ma'am Our Purchaser has deducted TDS u/s 194Q and deposited the amount. But the amount deducted is not reflected in the GST portal under TDS & TCS credit received table.
Section 194 Q belong to Income tax Act, and not related to GST Act , so you Can check in 26 AS on Income tax portal for TDS details.
Also check TDS return is filled or not and obtain TDS certificate in from 16 A from purchaser, who has deducted TDS and deposited.