Value referenc Price effective date

[Wendy]

Hello,

I have some questions on one of my models.  Hope you can give me some advice.  Thank you so much in advance! @DavidSmith 

Here is the background information: 

1) Source Module:

Flat file without time dimension

UNIQUE ID	PRODUCT CODE	MONTH NO	WEEK NO	EFFECTIVE DATE	END EFFECTIVE DATE	FOB
115331062155501-OCT-18	1153	10/1/2018	40	10/1/2018	12/31/2018	11.107
115331062155501-JAN-18	1153	1/1/2018	1	1/1/2018	9/30/2018	10.792
115331062155531-MAR-19	1153	3/1/2019	13	3/31/2019	3/31/2019	11.107
115331062155503-FEB-19	1153	2/1/2019	5	2/3/2019	3/30/2019	11.107
115331062155501-JAN-19	1153	1/1/2019	1	1/1/2019	2/2/2019	11.107
115331062155529-APR-19	1153	4/1/2019	18	4/29/2019	12/31/2019	11.107
115331062155528-APR-19	1153	4/1/2019	17	4/28/2019	4/28/2019	11.422
115331062155501-APR-19	1153	4/1/2019	14	4/1/2019	4/27/2019	11.422

2) Calculation Module:

Dimension: by month, by product

Calculate: 1) average price for the current month, 2) the price for the latest date in previous month if current month doesn’t have any price data.

3) Issue:  How to deal with 3 prices in April and using 4/29/2019 price (11.1) for May?

[ArunManickam · Accepted solution]

Hello @Wendy ,

This is one way to acheive this, but there could be more as ways as well.

Average Price	Transactions.FOB[AVERAGE: Transactions.Effective Date, AVERAGE: Transactions.Product Code]
Last transaction date	Transactions.Effective Date[MAX: Transactions.Product Code, MAX: Transactions.Effective Date]
Last transaction	IF Last transaction date = Transactions.Effective Date THEN ITEM(Transactions #) ELSE BLANK
Last transaction @ FG	Last transaction
Last price of the month	Transactions.FOB[LOOKUP: Last transaction @ FG]
Offset Price	OFFSET(Last price of the month, -1, 0)

Hope it helps.

Regards

Arun

[Wendy]

@ArunManickam Thank you so much for your suggestion!  However, it appears that "Last transaction" line item in Module "Transaction data- By dimension" is empty.  How did you get them in your test model?  Thanks!

[ArunManickam · Accepted solution]

The summary for "last transaction" should be "last non blank".

Thanks
Arun

[Wendy]

@ArunManickam Thank you so much!!!

[rob_marshall]

@Wendy ,

Just wanted to pass this along, but the period should not be part of the code.  In this instance, if I am reading it correctly, the code or list member should only be the transaction number (1062155501, 1062155531, 1062155503, etc.).  Take a look at this article which shows why having date or period in the code is not good for performance:

https://community.anaplan.com/t5/Best-Practices/Data-Hubs-Purpose-and-Peak-Performance/ta-p/48866

Thanks,

Rob

[Wendy]

@rob_marshall 

Agreed!  However, IT department can't provide the data with transaction numbers.  That's why we had to create "unique ID' to do workaround.

[rob_marshall]

@Wendy ,

I would recommend using what you have, without the Date as part of the key:

115331062155531

115331062155503

115331062155501

115331062155529

115331062155528

The reason being is have the same code, 115331062155501 repeated 4 times, just a different month.  If you removed the date from the code, you would only have this listed once in the list.

Thanks,

Rob

[Wendy]

Hi Rob,

Yes, the concatenation of those combination without date is only on the List once by using 1st occurrence.  The reason for including date in the "unique" ID is to capture all transactions.  I wish that we have better clean data to deal with.  Thanks!

Wendy