ECE Is Sending Validity Time = 0 In CCA Response For Valid GSU Leading To Positive Balance Issue (Doc ID 2748534.1)

Last updated on AUGUST 09, 2023

Applies to:

Symptoms

ECE (Elastic Charging Engine) is sending validity time = 0 for valid GSU (Grant Service Units).
If validity time = 0, then network will not send any CCRU (Credit control Request Update) unless the reservation is fully used or there is a CCRT (Credit control Request Terminate).
Because of this sometimes terminate request comes after session expiration, which is causing positive balance issue for prepaid subscribers.

Steps to reproduce issue:

1. Created a Charge Offer (CO) with eventdelayedsessiongprs and monthy cycle forward
2. Created a Discount Offer which consumes the free kb
3. Event delayed charges $1 per kb and monthy cycle forward grants 10kb and the validity is event occurrence + 2 days
4. Reservation config was configured for 72hrs
5. Created an account on JAN 26th 10:00 with the above CO and 10kb expires at JAN 28 midnight
6. Processed a usage request for 54 mb at  JAN 27th 10:00  without rsu (Requested Service Units)
7. GSU is 10kb and Credit ceiling breach occurred as expected but the validity is coming as 72hrs instead of 14hrs.

Changes

Cause

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