2024-04-17 Carrier Billing - Meeting Minutes

Owned by Pedro Díez García
Last updated: May 25, 2024
5 min read

Attendees & Representation

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LF Staff:

Community:

@Pedro Díez García (Telefonica)

@Ludovic Robert (Orange)

@Rafał A. (Unlicensed) (Deustche Telekom)

@K Barath (Ericsson)

@Abdel Elmoumen (Orange)

 

Date

Apr 17, 2024

 

Status: FINAL

Final Date for Comments: Apr 25, 2024 

Agenda

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  • Management of new meetings

  • Consolidated Work

  • Refund Track - Proposal Review

  • AoB

Minutes

Management of new meetings

  • Meeting minutes moved to CAMARA Wiki Confluence site.

  • @Pedro Díez García have contacted Evan Harrison from LF in order to generate Meeting Link in Zoom. Pending info from @Evan Harrison 

 

Consolidated Work

 

Refund Track - Proprosal Review

  • Proposal:

  • Discussion during the meeting:

    • From 3rd April meeting:

      • Refund creation

        • Request model based on Payment API.

          • type

            • Discussion around this concept. @Ludovic Robert indicates probably when the refund is total there is no need to indicate the refundAmount by the merchant. In partial refund yes, it is needed. @Pedro Díez García also has doubts regarding this and will check with business. With regards to partial refund, there is the comment about how to manage the taxes. OPEN

        • List Of Refunds

          • Request Model

            • Regarding filter criteria:

              • @Ludovic Robert initiates a thread for further investment/discussion regarding the consideration of service as input for filter criteria OPEN

    • Comments from Orange within PR (@Ludovic Robert)

      • Most of this points are not request for change but question I got when I did this review.

        • Are we sure to manage refund_in_progress, totally_refunded, partially_refunded as TransactionOperationStatus ? my point is that a payment could have been Succeeded and then refunded. Both state are valid. Need to be sure we did not need to tackle that in a specific refundStatus.

        • I'm still not sure if refund should be managed in a separate yaml or same yaml that payment. Have you @PedroDiez good rationale to make them separate?

        • Are we sure that refundAmount should be mandatory ? if type is total this could be source of unnecessary error (what about a request with type:total and amount inconsistent btw the payment and the refund?).

        • If requester fill refundDetails do we need to make check vs payment item? I guess yes.

        • In payment we require a referenceCode in the request - do we need one here for the refund?

    • During meeting:

      • Tracking to be done under Pull Request

        • Exceptions and notifications models added to the proposal

      • Refund `type` concept

        • OPEN @Ludovic Robert indicates probably when the refund is total there is no need to indicate the refundAmount by the merchant. In partial refund yes, it is needed. @Pedro Díez García also has doubts regarding and its pending Business feedback from TEF. With regards to partial refund, there is the comment about how to manage the taxes (i.e. for partial refund it is needed to indicate proportional taxAmount?, it may be complex for developer).

      • Get list of payments.

        • CLOSED So far it is fine to not consider `service` as filter criteria.

      • Controlling Time for refund execution:

        • Comment raised by Barath (Ericsson), asking whether it has to be controlled  by the API the period alloewd by business to be able to allow refund. Orange and Telefonica comments that is Business Logic from Telco Operator according to their business workflow.

      • Orange comments discussion:

        • ONGOING Are we sure to manage refund_in_progress, totally_refunded, partially_refunded as TransactionOperationStatus ? my point is that a payment could have been Succeeded and then refunded. Both state are valid. Need to be sure we did not need to tackle that in a specific refundStatus. 

          • The use of statuses related to the refund within the payment status concept can create confussion and misunderstanding. It is agreed to be renamed to "refundStatus" an also align this in carrier billing payment resource. Agreed by de WG. To be renamed

          • Also it is seen more suitable to move the "status" of the resource to the higher level of the resource, along with resource Identifier, because now it is part of "amount" model. Agreed by the WG. To be changed

          • Also need to cover the scenario where having several refunds in place.

        • OPEN Are we sure that refundAmount should be mandatory ? if type is total this could be source of unnecessary error (what about a request with type:total and amount inconsistent btw the payment and the refund?).

          • Commented by Pedro that still pending feedback from business. Expected to have by the end of April

          • Ludovic highlights that solution would tend to be simple and decoupled from business and alignment is needed. Pedro will check internally. It could be easier in that way to manage as an oneOf option.

        • ONGOING If requester fill refundDetails do we need to make check vs payment item? I guess yes.

          • Yes, it is agreed the information has to be consistent between payment and related refunds. HTTP 422 (specific code pending) commented as initial approach.

          • During this point also exceptions model commented two main points:

            • createRefund

              • For non existing "paymentId". Probably suitable exception is 404 NOT FOUND

              • Set of 403 exceptions (Business Exceptions) explained

                • Pedro will provide more detail for "CARRIER_BILLING_REFUND.PAYMENT_NOT_ELIGIBLE_FOR_REFUND" within PR, requested specifically by business

                • Barath and Ludovic comments about "CARRIER_BILLING_REFUND.REFUND_DENIED" one and the consideration to have alignment with the event case (async checking)

                • Ludovic initiates discussion about the use of HTTP 403 vs other status, commenting 403 to his view is closer to authorization topics and also realted to Issue#127 discussion. Pedro will think about it and also discuss with Jose.

        • CLOSED In payment we require a referenceCode in the request - do we need one here for the refund?

          • Checked online during the meetings and it is ok

        • OPEN Commented `merchantIdentifier` as filter criteria for get a list of refunds

          • Commented it makes sense for aggregator case from the business point of view, however it can be tricky for the developer as it would have to query payment list endpoint to obtain the information. Need to have some thinking about this 

        • OPEN I'm still not sure if refund should be managed in a separate yaml or same yaml that payment. Have you @PedroDiez good rationale to make them separate?

          • Pedro comments it is not a technical consideration but a strategical one, in order to not have a big API with the aim of have full APIs implemented as well as to provide flexibility for Telco Operators to their roadmaps delivery of features.

  • Next actions are:

    • Make clear changes in the PR

    • Every to think about pending points

 

AoB

  • Abdel Elmoumen from Orange joins first time WG

  • Ludovic comments about two points:

  • Next Meeting will be held on 7th May

 

Action items

AI#1: @Pedro Díez García Adapt in PR#152 clear changes
AI#2: @all think about pending points
AI#3: @Pedro Díez García Get feedback from Business
AI#4: @Pedro Díez García Think about considerations regarding Errors