I need your help to understand the logic behind planning cycle in article master MARC view.
I have a forecast delivery date e.g.: today 16/06/2017. this is my input start point.
I am using allocation strategy /rule(functionality) in ECC IS retail.
Now I need to calculate -->back track the allocation PO date,so that I can meet up the forecast delivery date (16/06/2017).
Now from date (16/06/2017) I subtract pl. deliv. time = 1 days
using FM -->BKK_ADD_WORKINGDAY --> which gives me 15/06/2017 ( Thursday)
now as per planning cycle = 209 --> it should be Tue and Fri.
So the allocation PO date(back track principle) should be set as 13/06/2017(Tuesday)
How do I calculate this Tuesday? ANY hint from any table ? or any FM in SAP can help the same?
Please provide your valuable input.