3306731 - How does PAL functionality interpretes time buckets with planned quantity "0"

Relevant Process
aATP with Product Allocation Functionalities

Starting Point - Possible example case
Regularly in a business year, the demand of certain products will be quite high.
This is the reason, the allocation quantity in such peak periods should be restricted. 

Starting Point - Configuration
A Product Allocation Object was created.
Product Allocation Planning Data was maintained only to the time buckets for these peak periods.
The quantity of time buckets for non-peak-periods was not maintained.

Detected System Behavior 
PAL Check Calculation against a time buckets in which no quantities are maintained causes undesired results in availability check.
Instead of providing "unrestricted" quantities in such time buckets, that have no maintained quantity, the available quantity (quantity contingent) would be limited to a "0". 

DISCLAIMER: Image/data in this KBA is from SAP internal systems, sample data, or demo systems of release S/4 HANA 2022. Any resemblance to real data is purely coincidental. 

• SAP S/4 Hana
• Advanced ATP
• Product Allocation (PAL)

product allocation,  advanced ATP, validity end date, time buckets, product allocation planning data, upload, download, PAL calculation, restricted quantity, unrestricted quantity , KBA , CA-ATP-PAL , ATP: Product Allocation , CA-ATP-PAL-2CL , ATP: Product Allocation (Public Cloud) , CA-ATP , Available to Promise (ATP) , Problem