We study a final value problem for first-order abstract differential equation with positive self-adjoint unbounded operator coefficient. This problem is ill-posed. Perturbing the final condition. we obtain an approximate nonlocal problem depending on a small parameter. https://safeersappliancers.shop/product-category/rangemaster-hlthds110sl-hi-lite-flat-built-in-110cm-4-speeds-b-chimney-cooker/