Compare and contrast the Planned Shipment Schedule if the Distribution Requirements Plan is made using

initially normal DRP process and then with the Error Add Back consideration.

Note:

Actual Demand for Period $1,2,$ and $3$ were $250,335$ & $215$ respectively $-$but only aware of these after each

time period is complete e$.$g$.$ you only know demand of $250$ in Wk $1$ at the end of Wk $1.$

Forecast requirements for each Time period are $265$ units, there are currently $185$ units to hand and $200$

units are due to arrive in Wk $1.$

There is a safety stock requirement of $65$ units, with a lead time of $1$ week. Quantities are supplied $($shipped$)$

in a lot for lot basis.