Previous Month Value

Question

Hi,
I have a couple of accounts that use the previous month value across years. However, sometimes it's necessary update the value in the middle of the year and this change should be reflected in the following months and years mantaining the old value in previous months and years.
Somenthing like this:
Year - FY12
Jan- 100
Feb- 100
Mar- 100
Apr- 100
May- 100
Jun- 100
Jul- 100
Aug- 100
Sep- 100
Oct- 100
Nov- 100
Dec- 100
FY13
Jan- 100
Feb- 100
Mar- 100
Apr- 100
May- 100
Jun- 100
Jul- 100
Aug- 100
Sep- 100
Oct- 100
Nov- 100
Dec- 100
If I change the value in November->FY12 to 200, I want:
Year - FY12
Jan- 100
Feb- 100
Mar- 100
Apr- 100
May- 100
Jun- 100
Jul- 100
Aug- 100
Sep- 100
Oct- 100
Nov- 200
Dec- 200
FY13
Jan- 200
Feb- 200
Mar- 200
Apr- 200
May- 200
Jun- 200
Jul- 200
Aug- 200
Sep- 200
Oct- 200
Nov- 200
Dec- 200
Any help?
Thanks

Answer 1

I typically just aggregate up the Base + Adj to get "Total Adjusted". No need for a formula, unless you want to introduce specific override functionality. (Where the override amount would ignore what's in "Base" and "Adj") You may be able to get away with making "Total Adjusted" dynamic calc. This will depend on a lot of different factors, but it's something you should consider.
Sometimes I put my adjustments into a separate form. Sometimes they're on the same form. That really depends on business requirements.
Let's say you don't want to make this a separate dimension. Then the next option is typically creating specific adjustment accounts. The accounts where you're carrying the balance forward would look to see if an adjustment has been made in one of these specific adjustment accounts, and if so, add that adjustment to the prior value. I tend to prefer a separate adjustment dimension as it offers more flexibility, but if you've already got a database built, adding another dimension can be painful.
- Jake