[taler-docs] branch master updated: clarify docs

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grothoff pushed a commit to branch master
in repository docs.

The following commit(s) were added to refs/heads/master by this push:
     new 48a21a1  clarify docs
     new 9439aa9  Merge branch 'master' of git+ssh://git.taler.net/docs
48a21a1 is described below

commit 48a21a197665e9ef06a2fc8626f48de9038d46d1
Author: Christian Grothoff <christian@grothoff.org>
AuthorDate: Mon Dec 14 14:21:37 2020 +0100

    clarify docs
---
 core/api-exchange.rst | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/core/api-exchange.rst b/core/api-exchange.rst
index a2b6e2a..9e4f24a 100644
--- a/core/api-exchange.rst
+++ b/core/api-exchange.rst
@@ -102,15 +102,13 @@ possibly by using HTTPS.
   **Request:**
 
   :query last_issue_date: optional argument specifying the maximum value of 
any of the "stamp_start" members of the denomination keys of a "/keys" response 
that is already known to the client. Allows the exchange to only return keys 
that have changed since that timestamp.  The given value must be an unsigned 
64-bit integer representing seconds after 1970.  If the timestamp does not 
exactly match the "stamp_start" of one of the denomination keys, all keys are 
returned.
-  :query now: request that the exchange answer the request as if the current 
time were the value given in "now".  The given value must be an unsigned 64-bit 
integer representing seconds after 1970.  This option is used for testing, and 
in production is likely not supported.
 
   **Response:**
 
   :http:statuscode:`200 OK`:
     The exchange responds with a `ExchangeKeysResponse` object. This request 
should
-    virtually always be successful.
-  :http:statuscode:`403 Forbidden`:
-    The client specified the "now" argument, but the exchange does not allow 
this option as per its configuration.
+    virtually always be successful. It only fails if the exchange is 
misconfigured or
+    has not yet been provisioned with key signatures via 
`taler-exchange-offline`.
 
   **Details:**
 

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