You have maintained Safety lead Time of XXX days in Planning master data for a Product. However, you see that the date at which proposals are created for the product are wrong. Lets take the example of 10 days in this case instead of XXX.
Reproducing the Issue
- Go to Supply Planning work center.
- Navigate to Products View.
- Search the relevant Product and Planning area combination and choose the button Open.
- You have a demand on a future date DD-MM-YYYY .
You expect the supply proposal to be created 10 days before DD-MM-YYYY, since 10 days is your replenishment lead time. However, you see that the system has created proposal on a date which is beyond ten days from the demand date.
The system considers XXX working days based on your site working day calander. So if your Replenishment Lead Time has 10 days maintained then the system will exclude all week ends and public holidays as per your site calnder. This is why you see that the system has reduced more than 10 days from your demand date. If you check you will see that the system has reduced 10 working days only.
The system is working as designed.
KBA , AP-SDM , Supply and Demand Matching , How To