Rolling Formula to Calculate in a specific column

ahuang3433

New Member
Joined
Jan 24, 2017
Messages
39
I am trying to create a rolling formula to calculate net inventory levels. Here is an example of what I'm working with. How can I get column D to keep rolling based on the inventory available of a specific part?

PartDemandInventory AvailableNet Inventory
A
1000​
5000​
4000​
B
1000​
3000​
2000​
C
1000​
4000​
3000​
C
1000​
4000​
2000​
A
1000​
5000​
3000​
E
1000​
3000​
2000​
F
1000​
2000​
1000​
E
1000​
3000​
1000​
D
1000​
1000​
0​
A
1000​
5000​
2000​
B
1000​
3000​
1000​
A
1000​
5000​
1000​
 

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Assuming "Part" is in A1, try this in D2 and fill down

=C2-SUMIF(A$2:A2,A2,B$2:B2)

From your example it clear how you enter deductions from your inventory but not how you enter increases when new stock arrives.
 
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