Incorrectly writes off goods from warehouse

We want to write off 160 items of goods from the warehouse, but only 1 item is written off. The product https://topbox.1b.app/app/product/19110/edit/ is sent to the write-off cart https://topbox.1b.app/app/storage/process/outcoming/ (selected “test warehouse” where it is listed 167 items). We enter the quantity of 160 pieces https://prnt.sc/dSjHnKgsdnzh and proceed to write-off https://prnt.sc/IJXuKqtruCLL. As a result, he writes off 1 piece from the warehouse, but in theory he should write off 160 pieces. Please tell me what we are doing wrong and why it doesn’t write off 160 pieces?