Incorrect Calculations during Sequential Discounting (Doc ID 2719719.1)

Last updated on AUGUST 26, 2024

Applies to:

Symptoms

The user observes incorrect calculations of discounts during sequential discounting. Discount is charged more than it should. 
From connection manager (CM) pinlog, for the cycle 2020-05-06 to 2020-06-06, there are 2 discount events for /discount 1213174 which applied discount twice

STEPS
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The issue can be reproduced with below simplified scenario:
1. Purchase product - $100
        purchase discount D1 10% = 100 - 10 = 90
        purchase discount D2 10% = 90 + 10(D1 refund) = 100 - 10 (D1 apply) = 90 - 9 (D2 apply) = 81

2. Cancel discount
        D1 = 81 + 10 (D1 refund) + 9 (D2 refund) = 100 , re-apply D2 = 100 -10 = 90
        D2 = 90 + 10 (D2 refund) = 100

3. Purchase discount
        D3 10% = 100 - 10 = 90
        D4 10% = 90 (D1 not refunded ) = 90 - 19 = 71

Changes

Cause

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