bringing back the rejected material into un restricted stock

Dear Experts,

We had a PO for 125000 qty of a material agaisnt which the GRN was done by stores

when quality fellow inspected the inspection lot only 25000 were found ok and the same were posted into unrestricted stock through UD

After discussion with vendor now we ara again required to bring back rest 100000 quanitiies to un restricted stocks as the same were routed through 122 movement by system automatically

please suggest

Thanks and regards

Pawan kHurana