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## If statement not reading periods prior to forecast start

Hi All,

I was wondering if someone could help with below.

if statement not reading dates prior to forecast start period.

Forecast start period is Mar -19

Below should return 0 rather than Mar -19, why is the if statement not reading the first part of the statement?

What do I need to change to get it to work?

IF PERIOD(Asset Acquisition date) + Asset life < Cal Start of timeline THEN 0 ELSE Asset life

Asset Acquisition date (20-08-2014)  - Date formatted with a date prior to forecast start period March-19

Asset life- Number formatted - 28.63

Cal Start of timeline - Time period - Month formatted - Set to March -19.

The statement is returning 28.63 instead of 0.

Thank you for helping out.

Naveed

9 REPLIES 9
Regular Contributor

## Re: If statement not reading periods prior to forecast start

Hi @nbakshi

What is your model time settings ?

Contributor

## Re: If statement not reading periods prior to forecast start

Thanks

Master Anaplanner/Community Boss

## Re: If statement not reading periods prior to forecast start

Because your time settings only run from 2019, the PERIOD element of the formula cannot return August 2014

Solution:

Set up a time range that runs from as far back as you need to the current timescale start.

This will then create a "superset" of months which will allow the PERIOD to return Aug-14 and the formula should then resolve correctly

I hope this works for you

David

Contributor

## Re: If statement not reading periods prior to forecast start

Thank you, David.

The solution worked !!
Master Anaplanner/Community Boss

## Re: If statement not reading periods prior to forecast start

Excellent!
Regular Contributor

## Re: If statement not reading periods prior to forecast start

Your model cal doesn't go before 2019 which is your your formula PERIOD(Asset Acquisition date) returns nothing .

So your formula is doing this

If <nothing>+28.63 = (nothing as its time formatted) < Mar 19 then 0 else 28.63

If Nothing < mar19 then 0 else 28.63

which is why you are getting 28.63

you can change your formula to check if

if isblank(PERIOD(Asset Acquisition date) + Asset life) or PERIOD(Asset Acquisition date) + Asset life <Cal Start of timeline THEN 0 ELSE Asset life

may be you can put this part as final date to check = (PERIOD(Asset Acquisition date) + Asset life)

if isblank( final date ) or final date < Cal Start of timeline THEN 0 ELSE Asset life

Hope this helps

Master Anaplanner/Community Boss

## Re: If statement not reading periods prior to forecast start

We crossed over on the replies

Check out my post just before

David

Regular Contributor

## Re: If statement not reading periods prior to forecast start

@DavidSmith  yes noticed after i typed my answer (i am a slow typer)  .

But its interesting to see how you are suggesting a superset approach vs my formula approach . Are there any pros and cons if we compare these ? .

Master Anaplanner/Community Boss

## Re: If statement not reading periods prior to forecast start

No worries, but in terms of pros and cons

Any additional checks through IF statements and additional line items are going to take longer to process than without, so it is always better to remove formula expressions if possible

Simple is better than Complex!

Also, the time range is not going to add to model size (unless it is used in a module)

David