Hi
The issue you have is related to how SAP standard does Quota compensation. There is a specific setting in Quota compensation that ignores the Deduction period of the Quota.
See: SAP Note 818886 - Infotype 416: Consideration of deduction intervals
https://service.sap.com/sap/support/notes/818886
The above details this very issue and advises the steps required to resolve it.
You will need an ABAP consultant to perform the change.
Please mark as correct if helpful.
There is a problem with the Note in that it cannot be found on the Market Place. SAP has marked it as not released.
Regards
Kea