How the first shortage date is calculated in Monitor material coverage app

[RaghavanKathamuthu]

I am using Monitor Material Coverage app. But have some doubts. Please explain.

My BOM

Maintain Time dependent stock app for material PPA24

This is my output screen from MMC app

MD04 screen - Material PPA24

1. How the first shortage date is calculated here for material PPA24?

MD04 for material PPB24

MD04 for Material PPC24

2. Why stock availability column is red for PPC24 only even I have the receipts and not for PPA24 & PPB24?

I referred this Link but not getting it.

3. How the below fields/ columns get calculated?

Days' Supply - current stock and the receipt and requirements information included

Stock Day supply - Only stocks and requirements. Not Planned receipts -

The day of the first shortage and the current date are taken into account for this calculation

Intraday Supply = Days’ Supply + Fractional Coverage on the Day of the First Shortage.

Stock Intraday Supply = Stock Days’ Supply + Fractional Coverage on the Day of the First Shortage.

4. How the below color codes got generated in respective columns.

Maintain Time-Dependent Stock Levels - Safety days of supply, Target days of supply

Red - Current day - First shortage days < SDOS & TDOS

Green -  SDOS < Current day - First shortage days < Target DOS

Yellow - Target DOS < Current day - First shortage days

Please provide your ideas