Question $2$

Given the following Master Schedule Data:

Assume we are currently in Week $16.$ Calculate the Available to Promise for Week $18.$

Available to Promise

First Week ATP

Subsequent Weeks ATP $($MPS $>0)$

$AT{P}_t=E{I}_{t-1}+MP{S}_t-{\displaystyle \underset{i=t}{\overset{z-1}{}}}O{B}_i,AT{P}_t=MP{S}_t-{\displaystyle \underset{i=t}{\overset{z-1}{}}}O{B}_i$

where:

$AT{P}_t=$ available to promise in week $t$

$E{I}_{t-1}=$ ending inventory in week $t-1$

$MP{S}_1=$ master production schedule quantity in week $t$

${\displaystyle \underset{i=t}{\overset{z-1}{}}}O{B}_i=$ sum of all orders booked from week $t$ until week $z($when the next positive MPS quantity is due$)$