[taler-docs] branch master updated: [dd 28] added motivation

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     new 95490a32 [dd 28] added motivation
95490a32 is described below

commit 95490a3234556594957a270ff0d051961b4b0ebc
Author: Özgür Kesim <oec-taler@kesim.org>
AuthorDate: Thu Dec 7 20:41:58 2023 +0100

    [dd 28] added motivation
---
 design-documents/028-deposit-policies.rst | 23 +++++++++++++++++++++--
 1 file changed, 21 insertions(+), 2 deletions(-)

diff --git a/design-documents/028-deposit-policies.rst 
b/design-documents/028-deposit-policies.rst
index 956945ee..1bdf4801 100644
--- a/design-documents/028-deposit-policies.rst
+++ b/design-documents/028-deposit-policies.rst
@@ -41,7 +41,19 @@ The policies shall be implemented as *extensions* to the 
exchange (see
 Motivation
 **********
 
-TODO
+GNU Taler's initial set of API's (withdraw, deposit, refresh) support most
+payment situations in which customers pay for goods and services within an
+otherwise unconditioned transaction.  (A notable exception from this the
+ability to provide refunds, which will be re-factored into a policy extension).
+
+However, in many payments depend on additional conditions to be met.  GNU Taler
+already supports payments with age restriction applied, but there are other
+scenarious that we want to support.
+
+Our aim is to provide an API for extensions of GNU Taler that implement
+particular policies and policy-handling for payments (also called *conditioned
+payments*).
+
 
 Background and Requirements
 ***************************
@@ -56,9 +68,16 @@ TODO, explain:
 - C-structs for policy extensions (esp. the handlers)
 - Naming conventions for policy extensions
 - Deadlines and -handling
-- API-endpoints (``/extensions/policy_...``)
 - Typical choreography of a deposit with policy and its fulfillment
 
+
+API-Endpoints of the Exchange
+=============================
+
+TODO
+
+
+
 Database-schema
 ===============
 

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