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DD 55: Wallet Problem Reports
#############################
.. note::
**Status**: Early work in progress / DD number reservation.
Summary
=======
This design document specifies global error reports generated/managed by wallet-core
and rendered by the wallet UIs.
Motivation
==========
Sometimes the wallet encounters issues that go beyond the scope of single transaction.
Requirements
============
* problem reports must have a clear lifecycle
* problem reports must have some type of identification that allows to
easily find out if a new problem report needs to be created when an
error happens or whether an existing one has been created
Proposed Solution
=================
Report identification
---------------------
The report identifier serves multiple purposes:
1. Usage as a reference in wallet-core APIs
2. De-duplication. The report ID should allow easy identification of an already existing report for a particular problem.
New wallet-core requests
------------------------
* ``listProblemReports``
* ``acknowledgeProblemReport``: Mark a problem report as read.
* ``deleteProblemReport``: Delete the problem report.
New wallet-core notification type
---------------------------------
* ``problem-report`` to notify clients about status changes or an error report
(including creation!)
Types of reports
----------------
* money lost due to the exchange stopping to offer a denomination
* money locked behind a (long) pending refresh
* money lost due to a permanently failing refresh
* exchange changed its master public key
* a denomination changed its info (expiration, fees)
Definition of Done
==================
TBD.
Alternatives
============
TBD.
Drawbacks
=========
TBD.
Discussion / Q&A
================
* When is a report amended vs a new report created?
* example: Exchange stops offering denomination D1. Later, it stops offering D2.
Are two reports generated or is the first report changed?
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